The Coward Stumbles into a Haunted Game [Infinite]

A super-duper coward joins a secret-room escape game organized by his classmates, hoping to spend more time with the guy he has a crush on.

But then everyone gets dragged into a real-life escape game.

[The above is a simplified blurb. I haven't figured out the proper one yet, but I wanted to put this up as a preview first, hehe.]

Theme: You can be brave even if you're timid.