[[ This is a webtoon BL comic, Ikehara is top and Rio is bottum ]]

It's been a few days since Ikehara, who is 1 year senior than Rio in high school, who's called the prince because of his looks had become rio's personal tutor, and Rio calls Ikehara as "Senpai"

Right now, they're hanging out in a store and Rio catches a smell of ikehara's shampoo

"Senpai uses XXX brand of shampoo? I also use it"

Rio said

Ikehara thought it's a coincidence but suddenly he goes closer to Rio to smell him, he sniffs Rio's hair close to his ear

"We truly use the same brand of shampoo, rio-kun"

Ikehara said, but Rio was getting flustered from the closeness