Y/n is painfully shy, the kind of person who fades into the background on purpose, and he keeps a part of himself hidden away—quietly closeted, afraid of what might change if anyone truly saw him. The Slytherin boys, however, have always noticed him. The five of them are already in a secret polyamorous relationship, bound by trust, devotion, and an almost constant need to be close—hands tangled together, sharing warmth, stealing quiet moments of affection when no one is watching.