i cant find the key for the bell rooftop??

[Diffusion<3]

I got all the items on hard and was told i need the bomb and transfer device thats it BUT ITS LOCKED STILL!? I never found a rooftop key before and dont know how. am I just dumb? help me lol

Cause I LOVE this game. reminds me of a slightly more fair saito no sutoka

[Sparkbag🔥]

you need to find a magazine and go to the place where there is the main girl Emiri and perform the Ultimate move on her which will destroy the wall where she is standing and that's where the key is hidden.

[Kätzchen]

You need to use the kabedon magazine in the corridor with Emiri