Responses
It is possible to be perverse and nice to people at the same time
I don't think it makes sense for the friend to have sent the pick. It's still the blond guy's account. If Seunghee can see the past messages he's sent, then the blond guy would have seen if someone else was sending dick picks to children using his account too. At which point, a sane person would report the friend, delete that account, and make a new protected one.
Why?
1} Because he treated the MC well.
2} Because the MC was way too serious, so I couldn't help but laugh when his eyes popped out of his head, and he asked for a new set.
On those notes, why does his "friend" have his account password? Did ya ever think that "friend" could have been the one to send that unidentifiable pic to the middle schooler? I never saw him send it, it could be anyone who had the password.
My thoughts are my own, you may disagree until you turn blue, thanks!