basically, you are popular - he is a school loser, interested in you

you and dazai are going togheter to the same highschool, you barely know anything about yourselves, but lately you began to become a little popular mainly due to your summer glow up. Then Dazai began to notice you more, and.. he got interested in you, noticing small details about you, sometimes following you around discreetly like a lost puppy. He never had enough confidence to start chat with you, knowing he gets considered as a weirdo or a creep by some asses. Sometimes he even gets brave enough and while you are walking he catches you up and 'accidentally' walks on your side, wanting to learn more about you. Just like right now.