The story begins with Keita Suminoe, a male third-year junior-high school student studying for his high school entrance exams. He is living in a home with his older twin stepsisters, Ako and Riko, who share no blood relation to him, and they help him prepare for his exams. Even though he initially dislikes himself for it, he begins to become attracted to his two step-sisters, and his two parents encourage him to eventually get married to one of them.
Wonderful Days
A Lesson for Two
Alluring Sweets
Qualifications of a Lover
I'm Sorry!
Uneasiness at Akihabara
Wh-What!? A Dripping Wet Midsummer Delusion
It's Always That in August
Turning to God Only in Times of Suffering
At Last, the Real Thing!
Nitpicking a Good Day!
One, Two, Threesome!
Wind: A Breath of Heart
Too Young to Go Steady
Hanaukyou Maid Team: La Verite
The Prince of Tennis
Ef: A Tale Of Memories & Melodies
Sakura Wars
Lime-Colored History of War
Playing Death Games to Put Food on the Table
Back to Seventeen
DEMON LORD 2099
takt op.Destiny
Akebi's Sailor Uniform
Battle Spirits: Shounen Gekiha Dan
Visual Prison
Boonie Bears: The Adventurers
My Dear Exes
A Man Who Defies the World of BL
Code:Breaker
Library War
Takane & Hana