L♥DK (2014)

Nishimori Aoi's parents moved to another city for work, but Aoi didn't want to transfer to a new high school. She stays behind and lives in an apartment by herself. Shusei Kugayama moves in next to Aoi's apartment. Shusei is a very popular student at their high school. Due to a mistake, Aoi makes the fire sprinkler go off in his room. Until Shusei's room is fixed, he stays with Aoi.

if you love the kiss dramas you might also like this one. i really liked L?DK. it's is kinda the same plot with them living in the same house. it really had cute moments. the only thing is that L?DK is a movie not a drama :(

but it also has a manga version.

Nishimori Aoi's parents moved to another city for work, but Aoi didn't want to transfer to a new high school. She stays behind and lives in an apartment by herself. Shusei Kugayama moves in next to Aoi's apartment. Shusei is a very popular student at their high school. Due to a mistake, Aoi makes the fire sprinkler go off in his room. Until Shusei's room is fixed, he stays with Aoi.