"I never saw you as my sister," said the brother before he leaned in to kiss her. Haruichi, the older brother who's two years senior to Natsumi, is a kind, cool, and the best older brother one could hope for. It's hard not to envy their strong bond. However, things begin to change as Natsumi enters high school. Haruichi feels jealous when his friends get closer to his sister, and Natsumi is infuriated to find out that his brother's lover looks eerily similar to her. With their emotions in turmoil, they come together one night and their relationship takes a new direction beyond being just siblings. This entire series, consisting of 9 parts, was released by Amu Comi.