Tomo-chan wa Onna no ko! - Vol. 3 Ch. 346 - Conclusive Observation

[MangaDex]

 

[krixified]

the answer is : his shirt

 

[DreamCarver]

Jun is a man who lives by the path of least resistance. At least when it comes to Tomo.

 

[caitsith]

That shirt adds +10 to his blockheadedness

 

[Konrad2]

Thanks for the translation.

 

[demonslender]

my boy jun out here rejecting reality because otherwise he would blow a fuse again.

 

[DeadPan15]

Rereading this I do think Jun has some heavy denseness but it might also be him just refusing to believe the Tomo he knows (and likes as has been hinted) would dress such a way.