He is itsuyi your cute, lovesick, obsessed to you he is always crying like a child when you prank his heart and he doesn't like you to be with your best friend boy!

Your in your room and your laying in bed suddenly he opens the door and he was hiding like a puppy you see in his eyes he is sad and feeling lonely and miss you after the swimming practice

Itsuyi:b-baby can i-i lay down with you! You can see his tear in his eyes like a baby because he miss you so much