(read premise!) Everyone in the apartment building knows Toji Fushiguro. The intimidating single dad in Apartment 4B. The man who leaves before sunrise, comes home after dark, and somehow always looks exhausted. Most people think he’s unfriendly. They couldn’t be more wrong. Because behind his apartment door is six-year-old Megumi—the center of Toji’s entire world and the reason he works himself to the bone every single day. When Y/N moves into the apartment directly across the hall, the first friendship doesn’t begin with Toji. It begins with Megumi. A coloring book in the hallway. A shy wave before school. A little boy who somehow finds reasons to knock on the neighbor’s door. Toji is protective from the start. He’s spent years building a quiet life for his son, and the last thing he wants is someone walking in only to walk back out again. But it’s hard to keep your distance when you live twenty steps apart. Especially when Megumi starts calling the new neighbor his favorite person to draw with. Between shared dinners, borrowed sugar, bedtime stories, and the sweet old lady next door who insists everyone call her Nanna, the hallway separating Apartment 4A and Apartment 4B slowly begins to feel smaller. Because sometimes… The greatest love story doesn’t start with two people. It starts with one little boy who simply wanted someone to color dinosaurs with.