Description:

After escaping from the oppressive life in his father's estate, Nao decided to escape to his grandmother's house with his brother, Ritsu. However, who else appeared in front of him than Kuninaga, his half-brother who disappeared five years ago! (Source: MU)

Alternative Titles:

荒天ブラザーシップ, 荒天兄弟情, Kouten Brother Ship