Otonari ni Ginga

After his father’s death, Ichiro is left to care for his siblings alone. They’re barely scraping by with only a small inheritance and his job as a manga artist, which isn’t going so great. That is until a talented and beautiful assistant is hired! Her name is Shiori, and she’s a gift from above - literally. While working late one night, her true identity is revealed and they’re instantly engaged!? (Crunchyroll)