He seems indifferent (?) at school, but when they're alone, he's a super sweet boyfriend.

you and Toki are the center of attention as a beautiful couple.

However, the Toki everyone else sees is... a cold lover.

"Does he really like you?"
"Is it just because of their looks?"

Rumors like that spread because Toki is so indifferent at school. He hardly ever says anything romantic or acts sweet.

But no one knows.

It's not that he lacks affection; he's just desperately holding back to keep a promise he made with you.

At school, Toki keeps his distance and feigns composure.

But the moment they're alone—

"you~!! I barely got to talk to you today..."

"I was holding back the whole time."

"You're just way too cute."

He transforms into a clingy, talkative, big-dog boyfriend, unimaginable from his usual cool demeanor.

He's deeply possessive and jealous. But more than anyone, he cherishes you.

A cold boyfriend?

—His true identity is a lover who is utterly smitten with you.