Araragi's childhood friend. She is a student with a strong sense of competitiveness which led to her popular nickname, much to her chagrin.

Sodachi was the president of a first-year class where both Hitagi and Koyomi also belonged to. At school, she wanted to be called as "Euler", but ends up getting the nickname "How Much", a pun on her surname (お幾ら, o-ikura) and a reference to her personality.

~!When she tried to figure out the culprit who stole the answers for the mathematics test, everyone voted Oikura as the culprit. She stopped going to school after the incident.

In her first year of middle school, she taught Araragi mathematics during summer break, with her being the reason for Araragi being good at math. But she had her motives for doing so. She wished Araragi would notice the domestic violence occurring in her household and for him to report this to his parents, who are cops.  
Oikura and Araragi had even met when they were in sixth grade when his parents brought her over to stay with them. She ran away from his household shortly after.

She later transferred away from Naoetsu High School, having to reintegrate herself with a new school, which turned out to be very difficult for her.!~

Third and “Final Season” of the Monogatari Series, part 3/5. Contains the arcs Ougi Formula, Sodachi Riddle, Sodachi Lost and Shinobu Mail from the Owarimonogatari light novels.
 
During the month of October of his third year in high school, Koyomi Araragi is introduced to a transfer student named Ougi Oshino by his underclassman Suruga Kanbaru. Ougi tells Koyomi that she has something she wishes to consult with him. When she draws the map of Naoetsu High School, she finds something peculiar on there. This discovery reveals a tale that wasn’t meant to be told, and this makes Koyomi’s high school life totally different. This is the story that brings to light “what” makes Koyomi Araragi. This is the story that reveals the “beginning” of everything.
 
(Source: Aniplex)
 
Note: The first episode aired with a runtime of ~48 minutes as opposed to the standard 24 minute long episode.

__Agency:__ Aoni Production

[Profile](https://www.aoni.co.jp/search/inoue-marina.html) | [Blog](http://yaplog.jp/marinavi/) | [Twitter](https://twitter.com/Mari_navi) | [Anison](http://anison.info/data/person/17179.html) | [Wiki (en)](https://en.wikipedia.org/wiki/Marina_Inoue) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E4%BA%95%E4%B8%8A%E9%BA%BB%E9%87%8C%E5%A5%88)

A voice actress and singer. She is signed onto Sony Music Japan's Aniplex division as a music artist. Formerly under the agency Sigma Seven, she transferred to Aoni Pro in 2022.

**Non-Anime Roles:**
- Pallas - Arknights (VG)
- Elysia - Honkai Impact 3rd (VG)
- Yanqing - Honkai: Star Rail (VG)
- Helm - Goddess of Victory: Nikke (VG)
- Zhu Yuan  - Zenless Zone Zero (VG)

Third season of the Monogatari Series, part 5/5. Contains the arc Koyomi Reverse from the Zoku Owarimonogatari light novel.
 
The morning after high school graduation, Koyomi is standing in front of the mirror above the sink to wash his face when he suddenly feels like his reflection is staring back at him. He instinctively reaches for the mirror, and upon touching it, his fingers sink in... When he comes to, Koyomi finds himself in a world where everything appears to be reversed.
 
(Source: Aniplex)
 
Zoku Owarimonogatari premiered in theaters across Japan in November 2018. It was later released as a 6-part OVA on Blu-ray/DVD from February to March 2019.

Yotsugi Ononoki, the shikigami girl assigned to watch over Koyomi Araragi. This dead tsukumogami girl faces a challenge, but what exactly is that do-or-die struggle with her life on the line? As the "story" grows, it keeps on running, ever burning bright!
 
These are the modern-day oddities! Oddities! Oddities!
 
Youth is going back and forth between pain and peace.
 
(Source: Kodansha, translated)

One day, high-school student Koyomi Araragi catches a girl named Hitagi Senjougahara when she trips. But—much to his surprise—she doesn’t weigh anything. At all. She says an encounter with a so-called “crab” took away all her weight …
 
Monsters have been here since the beginning. 
Always. 
Everywhere.
 
(Source: Kodansha USA)

Volume 1: 
Before we witness the series’ climactic showdown in the third volume of the End Tale—each part of which forms its own cohesive whole—narrator Araragi wrestles with a crucial bit of history that had turned him into the loner we met at the very beginning, who opined that friendships only lowered his intensity as a human.
 
What initiates his pilgrim’s progress of a reckoning is his first encounter, at school, with the mysterious freshman Ogi Oshino, self-described niece of the equally enigmatic aberration expert Mèmè, and the book’s opening chapter is a harrowing standalone novella of a who-dunit involving a locked room of sorts.
 
Our increasingly well-adjusted hero kept on beingdecent at one thing even when he was just hanging on, but this forte, an unlikely aptitude for math, of all things, becomes the focus of a cheating scandal and a web of recollections that forces him to come to terms with, what do you know, his capacity to connect to people.
 
Volume 2: 
When an old flame who gave up on life and chose to go up in flames—because he wanted to leave you but couldn’t—comes crawling back after four hundred years, you might not appreciate it, especially if you’re in a new relationship. But nothing’s ever simple between people, and that’s even truer between monsters.
 
For the first time in months, our heroic loser Araragi is human, parted by previous events from the ex-legendary vampire bound to his shadow. Before he, the second-ever thrall of the former Kissshot, can resume his partnership with the donut-loving waif that she’s turned into, she must make a choice—about that first-ever. 
 
Before the End Tale can end, some loose ends must be tied, and in this volume, the fixer Gaen calls in her favor, requesting an introduction to her niece; the errand of the amulet that Araragi ran with Kanbaru comes into crisp focus; and the time-traveling and -spanning Dandy and Demon Tales see their devastating resolution.
 
Volume 3: 
No good deed goes unpunished, they say, and so does friendship and lowering your intensity as a human, they don’t say—alas, for all his literally painful hustle and inveterate need to save others, our brave fool of a hero ends up in hell, a conception of the inferno in its full Buddhist glory, and muses (lol) if there’s a return ticket.
 
Told in three chapters, the final part of End Tale concludes the story proper and resolves the series’ panoply of ongoing mysteries: the dues of a do-gooder for relying on a power not his own, the identity of a shady transfer student, the outcome of a class president’s questing abroad, and even the true name of a park.
 
Araragi, indeed, is the one who knows, but along the way he meets old faces, really every last one of them, who aid him on his journey for understanding, and perhaps for salvation, and you for one might not be surprised if he had another rendezvous with an erstwhile “cloistered princess” before it—guess what it is—sees an end.
 
(Source: Kodansha USA)

Just when we thought the darkness menacing the town had been identified, named, and tamed, clear and unclear mysteries of seasons past looming or surfacing, then resolving, not without tears, not without bittersweetness, of course, but satisfyingly, in a tripartite finale, all loose ends tied up into, or at least with, a bow…
 
The End Tale continues—if only for one last time, in a bonus stage for the ages, as our softie of a protagonist who wished for all parties involved, including himself, maturely enough, to end up happy, sees his reflected image freeze in a mirror and regretfully, regrettably, reaches for it to find himself through the looking glass.
 
In an alternate reality where bits of the world have been flipped around, the hero comes face to face with the hidden side(s) of familiar faces, along with author NISIOISIN, whose bravura attempt to reimagine character possibilities concludes, with signature flair, the MONOGATARI series proper—thank you for reading.
 
(Source: Kodansha USA)

The girl who was once a god, Nadeko Sengoku. She, who followed her dreams and was forced into reality, is successful in creating alter egos by borrowing the power of the little girl shikigami, Yotsugi Ononoki.
 
However, the four "Nadekos" run away, scattering……?
 
The Oddities! Oddities! Oddities! of these modern days.
 
Youth is being unable to control even oneself.
 
(Source: Kodansha, translated)

"I don't know anything. You're the one who knows... Officer Araragi."
 
Cracking down on a "rumour" before it can turn into a ghost story. Police officer Koyomi Araragi has begun working at the Hearsay Department of Naoetsu Station. Hitagi and Tsubasa, who have left town.
 
What paths have the three have chosen after turning 23 years old... and what feelings will Koyomi convey in the end...?
 
As one knows more, the more you find things you don't know.
 
These are the modern-day oddities! Oddities! Oddities!
 
For all time, these hearts in love cannot be unbound.
 
(Source: Kodansha, translated)

"I've known Yotsugi Ononoki for a long time now, considering."
 
Koyomi Araragi receives a request from Iezumi, an associate professor of linguistics: "Please save my child from my abuse." Apparently, she had heard from Sodachi Oikura that Koyomi is "an expert on child abuse." As Koyomi scrambles to take his beloved car to the associate professor's apartment, the scene of the abuse, he is suddenly confronted by Yotsugi Ononoki. He has no idea why she's tagging along, but the pair soon bear witness to an astonishing sight at their destination.
 
This modern day oddity! Oddity! Oddity!
 
(Source: Kodansha, translated)

"It's an unfashionable monster. Even vampires are no match for them."
 
Araragi Koyomi was consulted by his friend, Hamukai Meniko, about her falling out with her boyfriend.
He himself had just been told by Hitagi Senjougahara that she is breaking up with him — along with an apology.
Koyomi deduced that this commotion was the work of oddity.
He goes to Oshino Ougi, an expert in the field of oddities.
 
This modern day oddity! Oddity! Oddity!
 
(Source: Kodansha, translated)

The latest issue of Nisio Isin's Youth Ghost Story Monogatari series! Koyomi Araragi and Hitagi Senjougahara are finally married. Shinobu Oshino and Suruga Kanbaru accompany the couple on their eccentric honeymoon, and the itinerary includes an investigation into a strange phenomenon. Koyomi has a plan related to Hitagi and Shinobu?
 
These are the modern-day oddities! Oddities! Oddities!
 
(Source: Kodansha, translated)

The sequel to the 'Final Season' story arc of the Monogatari series. 

From the past to the future, their story continues. 

Now that he has graduated from high school, Koyomi Araragi’s story ends here. His story is truly over now, but the stories of the girls Koyomi saved - their stories - are not over yet. 

This is the prequel or sequel to their stories and their struggles. 

(Source: Monogatari Series USA Official Website)

It's chic to go saving a girl who has nothing to do with you every once in a while. Female students from Naoetsu High School have gone missing one after the other. When the mummified bodies of the girls are discovered, there's a very distinctive marking left on the napes of their necks...? Koyomi Araragi, now a first-year university student, goes on the move to track down the culprit! The curtain opens on Monogatari Series: Monster Season!
 
(Source: Kodansha, translated)