Reminder that he is doing all this bullshit while his girl is getting her back blown out by the other guy
But Kouhai is worried something might happen to Mako.
When Kouhai leaves the room, I would have found it natural for him to wonder what was happening in her room, imagine Mako having sex with the other guy, show emotions like regret, or question his own actions. Instead, Kouhai wonders whether this breaks the rules... Reading this, I’m honestly surprised anyone bought the volumes.
The best bit of this episode was ‘Mako-chan, wait for me’