Team Manga

Serena, Eve, and Evolu are trying to remember their childhood. They can't really remember much but they remember that they had a team. That team had five total people. But when they wake up they're locked in a chamber. How could they get out? How come they are missing two other people in their team? Figure it out! Also I just wanna say that this series will go backward instead of forwards XP (Maybe XD)