Calling it, the guy she was holding hands with is just to check her feelings whether she still likes MC or not. I just don't understand why they gotta go near MC's house like that's just plain stupidity
Out of topic but author please let Hebikawa be a bad person, we don't need the "it's a misunderstanding" trope which turns into a love triangle (or even love square if Kusunoki's friend fall in love with mc too)