Shut In (Larry Stylinson)

Louis moved in with his protective and possessive Highschool sweetheart, Marcus Maxwell (or just Max as Louis calls him), at the young age of 18. After that, Louis's outside presence slowly dwindled until he only left the house for special events, causing him to become afraid of the outside world, and develop a stutter.

One day, bright and selfless Harry gets the wrong house number and winds up knocking on Louis's door. The shy lad answers despite his trepidation and quaking, only to be met with a strange giant.

Louis nearly collapses in on himself at the sight, and Harry finds that quite interesting. But is it interesting enough to have him coming back to the old Victorian house at the end of Cherry Lane?