Aki Katsu

Makoto and Yura Onoda are a newly-wed couple with zero sexual experience. Yura is a shy and naive 25-year-old woman whose good looks grab men's attention, something that she dislikes because she gets embarrassed very easily. Her husband Makoto is of the same age, but as opposed to his wife, he loves having dirty thoughts about other women. Physically though, Makoto is truly faithful to Yura. Both of them may be virgins, but now that they are married, they are ready to dive into the world of sex, "practicing" as often as possible. However, the world of sex is complex, so they need all the help they can get to find their way through it. Thankfully, their friends, acquaintances, and porn media lend them a helping hand.

Upon marriage a wife and husband were virgins. They steadily improve their sexual skills day after day. After six months of marriage they are having sex every night. The wife, however, feels things are becoming stale given her husband's lack of new maneuvers in bed. One day the sister-in-law comes to meet her brother's wife and she is having relationship problems with her boyfriend. The sister-in-law insists that the man will get bored if a woman is always available for sex prompting the wife to restrain herself for three weeks.

Yura and Makoto married without ever being intimate. The couple have a happy life together and they move to Makoto's hometown. There, Makoto meets Shiori, who graduated from the same school as Makoto. It turns out, Shiori, who is about to get married, has been thinking of Makoto for the last 10 years. Shiori acts upon her feelings by calling Makoto and then kissing Makoto, which Yura sees ...

Yura and Makoto married after meeting each through a blind date. They were both inexperienced prior with intimacy prior to their marriage. On their first night together as husband and wife they have problems with their inexperience. They decide to step up to become a real married couple...

Insecure Ai Shiomi begins attending the prestigous Psychic Academy for psychically gifted students, following in the footsteps of his legendary older brother.

A high school student's father re-enters his life and brings along his famous new wife and daughter.