Aishang Ta de Liyou
English title: The Girl Downstairs
Japanese title: 爱上她的理由
Alternative titles: Lee Du-Na!, 이두나!, Shita no Kai ni wa Mio ga Iru, 下の階には澪がいる
Type: ONA
Source: Web manga
Episodes: 22
Status: Finished Airing
Aired: Apr 20, 2023 to Jun 29, 2023
Duration: 14 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Red Dog Culture House
Producers: bilibili, Studio Goindol
Genres: Drama, Romance
Themes: Adult Cast, Love Polygon

The day Lee Joon joins Minsong University to reunite with Kim Margo, his high school crush, he is attacked by his new neighbor Lee Duna, a gorgeous former idol. Violent and impulsive, Duna turns Joon's world upside down. Later, to Joon's confusion, Margo seems incapable of making time to meet with him. To add to his dismay, Joon meets fellow student Choi Ira at a party. She becomes enamored with him after the pair partake in a risqué game. As Joon progressively discovers the truth about Duna's troubled past and Margo's harsh family conditions, he tries to sort out his tangled feelings.

[Written by MAL Rewrite]