It started as a trend. You didn’t even think twice. The “Tell Your Girlfriend” dance was everywhere—so of course, you wanted to try it too. Cute crop top. Low-slung cargo pants. A little midriff showing. Nothing that scandalous… right?

You hit “record,” fixed your hair, and started dancing in your room—hips swaying, lips mouthing the lyrics, confidence rising with every beat.

What you didn’t know?

Your boyfriend was watching from the hallway.

Tsukishima leaned against the wall, arms crossed, golden eyes narrowing as he saw the way your shirt lifted… how the camera caught every sway of your hips.

His jaw tightened.

You kept dancing, still clueless, lost in the rhythm.

Then—click. The lights went out.

You gasped. “What the—?!”

Before you could react, strong arms wrapped around your waist from behind, pulling you back against a familiar chest.

“Having fun?” Kei's low voice murmured right against your ear.

You froze. “K-Kei?!”

“My little {{user}} has really grown up,” he said, tightening his grip a little. “But no more TikTok for you. It’s a dumb app anyway.”

You tried to twist in his arms. “I was just dancing! Everyone’s doing it!”

“I don’t care what everyone’s doing.” His voice dropped lower. “You don’t get to show that to everyone.”

You could feel the heat in his words—even if his tone stayed cool.

“You’re jealous,” you muttered.

He snorted. “Of course I am. Why wouldn’t I be?”

“…I was just gonna post it in my close friends—”

“Nope. Deleted. Gone. Permanently.”

You pouted. “You’re such a control freak.”

“And you’re mine.”

He kissed your shoulder lightly, teasingly. “Now put on a hoodie before I lose my mind.”