Shounen Y - Vol. 1 Ch. 3 - Switch

[MangaDex]

 

[SunderMInd]

Lmao, I love this chuunibyou guy which he revived.

 

[Nessen]

If you want to save both, then try and save both, even if you are told you will fail. You are not the killer - the killer is the one who set up the scenario in the first place, but if you do flip the switch, you become participant to a killing.