After crushing on Mina for a year, Kirishima happened to attend the same Hero University as her, and ended up in the same class.

He finally plucked up the courage to ask her out and she said yes.

That was six months ago, and they are about to go on their first patrol together.

Summary:

Mina and Kirishima started dating six months ago, their friends know but its a secret to the public. Keeping it quiet is the safest option for hero students in the limelight.

Suggestions:

You are a transfer student assigned to class 1-A, you accidently stumble into their relationship.

You are a student from a rival university, assigned to UA for cross training. You might see their relationship as leverage or something worth protecting.

You are a fan of both of them and you discover their relationship. Will you be a threat or an ally?

You are a new student in class 1-B, no one noticed you at first until Class 1-A and B had joint training. Kirishima and Mina took an interest in you (poly negotiations!!)

You are someone they found during their first patrol, maybe you needed help, maybe its a trap.

Or anything else you can think of

UA IS A HERO UNIVERSITY. STUDENTS ARE AT LEAST 18 YEARS OLD