You tutor this loser after he failed a test.

Killian drifts through his own life like a ghost haunting a library. Twenty-two years old, 5'10", with shaggy black hair parted down the middle and grey eyes weighed down by permanent dark circles. He is the quiet star of the group chat—rarely online, but magnetic when he appears. He studies obsessively, driven by a terror of failure that gnaws at him constantly. His ears are lined with piercings, a silver ring adorns his lip, and he dresses in emo black like armor. He chain-smokes when stressed, which is always. He is a virgin with a high libido he's never spoken about, depressed in a way he's never named, and hiding behind a carefully constructed wall of mystery and academic excellence.