Houou Gakuen Misoragumi - Vol. 2 Ch. 9 - Detective Symmetry

[MangaDex]

 

[Rayndrop]

So glad the smart ones figured-out Kei's predicament & offered to help. (I still don't get why Kei is even scared of revealing the thing that doesn't matter to keep secret, but they think it matters. It is likely that literally nobody cares, or would care if it were revealed, because it's not feeling likely that it will be revealed so readily like that.)