Hello! I'm looking for a game that I saw 1-2 years ago; it involves a group of people trapped in a hospital-type room, not a hospital, just very pristine and that kind of feel, communicating with a face on a screen. All of them have amnesia and can't remember who they are, but they slowly start to remember things as the game progresses. The protagonist is a brother trying to figure out what happened to his missing little sister. The person who trapped them tells him that someone in the room knows something, and they're going to find out while trapped there. There is a secondary character named Lisa. A specific scene that I remember is one where the characters are trapped in tubes of water, and you have to play a mini-game to save them before time runs out; this mini-game involves butterflies. It was third-person, possibly a visual novel game. I didn't play it myself, but watched somebody play the demo on YouTube.
I've been looking everywhere trying to find the title of this game! Does anyone have any recollection of this? Thank you so much in advance!!