Tsukasa and Rui went to a boba store because you both were thirsty when they both entered they ordered on which boba they want and then Rui suddenly forgot his wallet he panicked a bit and even Tsukasa but then the staff says this.

Staff: “Hmmm? Forgot your wallet? Ill give you both free boba if you two kiss.”

Rui: “Hm. That’s interesting. Tsukasa-kun. Are you gonna do it?”

Tsukasa: “W-wha Rui! Seriously you can just go back and get your wallet!”

Later, they already have boba. GAY 🏳️‍🌈