University graduate and best friends with Ikki. He likes making math puzzles and observing things. He likes every single type of animal, because he likes to observe them all.

His symbolic route in the game is the 'Clover'.

(Source: Wikipedia)

This story takes place in a fictional town, in a fictional country, in a fictional world. One morning, a young lady awakens to find that she has lost all her memories prior to that morning. Her life, her relationships, her very name&mdash;all gone. All that's left is a cell phone with numbers and names she doesn't recognize and Orion, a young boy that only she appears to be able to see. With Orion's guidance, she struggles to make sense of herself, a boyfriend she doesn't know and the thousand and one little things that make up a daily life. But with no memories left, the only alternative is to forge new ones, even if that means leaving old loves behind. 
(Source: Sentai Filmworks)

Awards: 
- Most popular voice actor in the Animage Anime Grand Prix (2004)
- Best Supporting Actor at the 1st Seiyuu Awards (2007)

**Non anime roles:**

- Kamisato Ayato - Genshin Impact (Video Game)
- Otto Apocalypse - Honkai Impact 3rd (Video Game)
- Clotted Cream Cookie - Cookie Run: Kingdom (Video Game)
- Phantom - Arknights (Video Game)
- Tatsulot - Kamen Rider Kiva (Tokusatsu series)
- Luocha - Honkai: Star Rail (Video Game)

Animate Tokuten for purchasing all 6 volumes of TV Anime Series.

The contents of the OVA are from the Drama CDs.

The heroine wakes up on the morning of August 1 and discovers she has absolutely no memories of the past. A boy appears before her, and he introduces himself as a “spirit” named Orion. The heroine struggles to regain her memories under the guidance of Orion. She then gets a phone call, but she does not recognize the name on her mobile phone screen. She meets her apparent “boyfriend,” despite not knowing his face.
 
An adaptation of the game's original fandisk AMNESIA LATER.

1. Prologue (by Kuromura Moto) 
2. Shin Route (by Ioka Wako) 
3. Ikki Route (by Ouka Mai) 
4. Kent Route (by miniwa) 
5. Toma Route (by Naruse Isa)

Side-story of the main Amnesia.
 
1-3. Ukyo-hen: Joker no Sekai [Kuroyama Mekki] 
4. Toma-hen: Diamond no Sekai [Ouka Mai] 
5. Ikki-hen: Spade no Sekai [Miniwa] 
6. Shin-hen: Heart no Sekai [Ioka Wako] 
7. Kent-hen: Clover no Sekai [Naruse Isa]