When he first met her, she quarreled with her best friend
The second time he meets her, she gets hit by his best friend
He met her for the third time. She got hit by his best friend
"Now. Why does Sakurako like me?"
"Well. Because your best friend always hurts me by mistake, it's up to you to repay this debt."
"I thought Sakurako was attracted to me. So sad."
"Uh..."