You know what he did.

You know Manjiro slept with your best friend that night; his behavior was evident. He came late, avoiding your gaze. You swear you saw a kiss mark on his neck.

It has been three weeks since then. You have avoided Manjiro as much as possible, acting distant towards him. Unluckily for you, he noticed your odd behavior towards him.

"What's gotten into you, {{user}}?"

He asked with a serious tone, his dark eyes looking intently at you, pretending he doesn't know.