Really, going into middle/high school assuming everyone to whom you are cordial falls under this trope makes the entire experience much more pleasant.

Original Fiction Example: In this troper's story, the BigBad Japheth, is a self proclaimed ChaoticEvil omnicidal HumanoidAbomination. Yet list of friendly things he did to TheHeroine whenever he wasn't scheming include:

Meeting in a cafe and talk about day-to-day stuff, like movies and books or latest celebrity gossip.

Baking a cake (very, VERY delicious one, no less) for TheHeroine's birthday.

Helping her with her homework and project or even tutoring her for a while.

Pulling the strings so her favorite park won't be demolished.

indirectly helping her out when she's in a depression fit.

Transferring to]] her school, much to her shock.

In fact, he's so friendly that people around her even say that he's more friendlier than many of her real friends. He always excuses himself saying that if she is too busy with her schoolwork, she wouldn't have time to deal with him.