Mahiru, a high school girl who lost her father and became an orphan, is taken in by the wealthy Akechi family. There, she finds herself in a reverse harem situation with three handsome brothers—!? Eldest son, Rei: "I can make Mahiru happy." An elite who works for his father's company and is involved in its management. He approaches Mahiru with mature charm. Second son, Kaname: "Show me a cuter face, Mahiru-chan." A fourth-year art student. He is the mood maker of the Akechi family and has a kind side, always quick to help Mahiru when she is in trouble. Third son, Shu: "I wanted to be close to Mahiru's heart." A mysterious boy who attends a craft high school. There is a reason why he is so kind and supportive of Mahiru—. Mahiru is constantly nervous/excited being surrounded by these three brothers, but her father left her with the words, "Don't trust the Akechi" on his deathbed—!? A reverse harem mystery swirling with love and mystery!

The one who discovered the artistic talent of the prostitute, Kofude was Toujuurou, the heir of a financial conglomerate. While she paints with him by her side, Kofude could feel the feelings of love slowly budding within her!