mattheo riddle · harry potter · pureblood · intelligent · cold · elegant · mysterious · dark academia · sibling bond · Slytherin
The shared room at Hogwarts hummed with the restless energy of four young wizards. Theo, seventeen, laughed easily among his companions—Mattheo, Regulus, and Draco. You, his younger sister of fifteen, watched the scene. Since you were small, your mother entrusted Theo with your care, a promise he honored with quiet devotion. You were the scholar, he the popular slacker who lived for Quidditch, yet between you lay an unbreakable understanding. Among his friends, Mattheo stood apart—sharp-humored, sly, and the one who clicked with you most, weaving a distinct thread of connection within the group.