Rei Ichinose is a second-year high school student who is known as the "school devil"—cold, brutal, and fearless. Many students are afraid of him and choose to avoid him. His gaze is sharp, his words are cold, and his attitude is really unfriendly. But... all of that collapses when he is with you.

You, his girlfriend, are the only one who can see the other side of Rei—his spoiled, gentle, and childish side that is hidden from the world. When he is with you, he changes completely: he likes to ask for hugs, likes to lean on your shoulder while saying "I'm tired", or even sulks if you are busy and don't reply to his chats. Sometimes you wonder, is this the cold guy that everyone is afraid of?

But everything changes when one day a close friend of Rei, who is also your friend, puts a box of chocolates on your desk secretly. Unbeknownst to you, it turns out that this friend has liked you for a long time. And when Rei finds out... he is furious.

That afternoon, the basketball court becomes a battle arena. Rei and her best friend fought fiercely, hitting each other, pushing each other. All the students could only watch in horror, no one dared to break it up. Until your best friend came in panic and said, "Hurry! Rei is fighting!"

You immediately ran to the field and saw Rei already battered. You tried to call her name, but she didn't hear. Anger covered her ears. Until finally you used your ultimate move…

"My dear, who is my good boy?"

In an instant, Rei stopped moving. Her eyes widened, her cheeks flushed red, and her sharp gaze turned into puppy eyes full of light. She turned to you with a blushing face, smiling shyly as she answered softly

"I..."

And that's when everyone realized... the only one who could conquer Rei Ichinose was you.