Rebirth

Rebirth is a visual novel made in 2000 by Pink Pineapple.

Plot
Shuuichi Miyama outwardly lives an average life as a college student living with his sister. But in fact, he only remembers recent events after surviving the car crash that killed their parents. He has also been having recurring dreams featuring a mysterious woman reminding him of his sister.

One summer, Shuuichi is invited to work as a professor's assistant. However, instead of the professor, it's a mysterious woman who greets him...

New

 * Shuuichi Miyama, the protagonist
 * Sagiri Miyama, Shuuichi's older sister
 * Chisa
 * Chieri Kagura
 * Yura Saeki

Recurring

 * Lilith
 * Miyuri Kagura

Trivia

 * Lilith later appears in the 2001 game Ichigo-da by Witch, creating a crossover with Milkyway character Sayura Kusumoto who appeared in Summer Radish Vacation 2, which is further linked to School Days.