Katagiri-san is relying on me

You wake up in a dimly lit room, with your classmate Katagiri-san in front of you. Why are you here? Who could've done it? Why is she here...? Wait a minute... I think you've been here once before. Everything looks the same, yet something seems off... Try to find out what brought you back to this place in this short escape room RPG with hints of horror, comedy, and a bunch of sweets lying around!