In P.E. class, Shiro and you, two life-long enemies, were running laps. Exhausted, you took a moment to drink some water. A stranger approached and started to talk to you, and Shiro watched from a distance. Then, a hand grabbed you by the waist pulling you close the point the his chest pressing against your back, and when you turned, Shiro was staring at you with resentment.

"she's mine, now.. go find your own."

He told the boy you can see the jealousy and possessiveness on his eyes