The storyline revolves around a princess that has returned after 3 years, and a hero that is given the burden to protect the girls (both the princess and the younger sister).
 
(Source: Anime News Network)

Based on a game by Rune. 
 
Hatsushima Minoru was a high school student, who goes to Seiou Kan Gakuen High school which located on the hill in a historical town. He spent a carefree campus lives with his friends. One day in spring, his boy and girl friends announced that they began to go out with each other. Until then, Minoru hadn't wanted to have a lover very much. But he found he yearned for their relations. After a while, when his little sister took him to the tennis mach, he met Sakurai Momoko who was his senior student. 
 
(Source: AnimeNFO)

Based on the hentai PC game of the same name by Witch. A series about a man who owns a cafe called "Milkyway" and the group of young women who help him tend it. 
(Source: Anime Mikomi)

Based on the erotic game by Terios. 
 
Chihaya &amp; friends come to the beach for summer camp. There they meet their classmate Nami Minami. She likes Natsuki, but doesn't have the courage to talk to him. As the darkness inside Nami grows, she finds an old mansion where the "Netherworld Tree" awaits her. It was the start of the incident that would rock the boat? 
 
(Source: AnimeDB)

Based on the erotic game by Terios. 
 
A magical creature went to the normal world to retrive some seeds. He lost his power and fainted. A girl found him and took him home. Well, this creature became a man after gaining back his power, which surprised the girl some. An incident happened and she became a magical fighter with his kiss. Things start to get complicated as they try to get the seeds and with most people not being what they seem. 
 
(Source: AniDB)

A young man wakes up in an unfamiliar room. He has no memory about anything and can't even remember his own name. 
When he first wakes up there are six maids waiting and worrying about him because he is their new master. One of them tells him his name is Akio. He then learns that he is in a special mansion and will be able to leave only after he manages to resolve his personal issues. The maids are supposed to help him do so, however with no memory he has no idea what personal "issues" he needs to resolve. 
(Source: AniDB)

Lemon Heart