RE: Alistair is a free English otome game. Merui is a girl who loves video games. She often plays an MMORPG called Rivenwell Online with her online friend Fiona. When a boy with the user name Alistair steals a rare item from her in the game and forces her into a bet to get it back, she is determined to exact revenge on him. Unfortunately, she has no idea who he is in real life. She finds out that only one of three boys from her school could be Alistair.