姉♥Summer! ～ねえ♥さまー！～
Sumeragi, Kohaku, Okita, Kazuhiko, Artemis.
Yuuta is a guy is in his high school senior year. While he prepares for his next entrance examination for college during the summer break, his cousin Kei does him "the favor of studying with him", but it turns out to be somehow different than what our hero expected.
