My Childhood Friend Came Back to Get Revenge

[The original premise has been changed. This story is free while serialized. The outline is complete, and updates will come when they come.]

The bottom was moody as a child, sometimes sharp-tongued and mean, sometimes gentle and friendly. The top was bullied by him, but had no choice but to play with him. The bottom wouldn't let anyone else play with him.

The top was left with childhood trauma by the bottom and was forced to transfer schools. Years later, they transferred to the same university and ended up in the same dorm. The top sought revenge.

The bottom only vaguely remembered this childhood friend as an adult. When the top deliberately approached him, the bottom let him go play with other people. The top thought, "Where's your possessiveness toward me? How can you so easily hand me over to someone else???"

The top made the bottom fall for him, then dumped him at the height of their passion. Who would have thought the top would get more and more invested too? But in the end, the top still broke up with the bottom.

He thought the bottom would beg him to stay, but he didn't.

The top was miserable for a very, very long time.

Then one day, the top accidentally discovered that the bottom had a twin brother whose sharp, mean personality was just like the person he remembered.

He got... revenge... on the... wrong... person.

Theme: Treat others with kindness