By not being sociable, not putting any effort into making or maintaining friendships, not keeping up with your peers and adapting to trends, avoiding anything that stresses you if you, finding comfort in isolation from others.

Another big thing is Tomoko is not that attractive. You think that because of the artstyle + literally me girl + your own desperation. If you're attractive, there will always be people who want to get to know you. But she's just some weird meh-tier girl.