Three 17-year-old best friends with differing attitudes toward sex learn to navigate love, intimacy, romance and womanhood in a complicated world.
E1 · Graduation from Virginity at Age 17.3. What do we do now?
Sakura grows nervous when her boyfriend invites her to his house. Having no experience with sex, she turns to her friends to help her prepare.
E2 · Is having sex really necessary in the first place?
Tsumugi gets invited to the movies by a male childhood friend she hasn’t seen since junior high. At the end of the night, she comes to a realization.
E3 · Is it bad for girls to have a lot of experience?
Yuna excitedly tells Sakura and Tsumugi about her new 26-year-old boyfriend, but when her stomach begins to hurt, they fear that she is pregnant.
E4 · Frankly speaking, do girls masturbate?
Sakura hears odd sounds coming from her mom's room. She tells her friends about it but is shocked when Yuna suggests her mom is using a vibrator.
E5 · Does gender matter when falling in love?
Feeling confused about Yu's sexual orientation, Sakura consults Tsumugi and Yuna. Later, she blames herself when rumors about him spread at school.
E6 · Is breast size really that important?
When Yuna fears her boyfriend is cheating on her with a larger-chested girl, she follows him and is horrified to see him entering a brothel.
E7 · Boys, have you ever had a haemorrhage for a week?
Tired of her father asking her about her love life, Tsumugi decides to enter a speech contest to win a scholarship and move out as soon as possible.
E8 · Dropping out of school due to pregnancy. Why only girls?
Sakura worries about her friend Narumi after learning that Ryusei got her pregnant. When Narumi faces expulsion from school, Sakura makes a bold move.
E9 · 17.3 years old. We're not at an age to say, "we don't know anything.
Following an argument with her mom, Sakura runs away from home. The next day, she returns with Yu to speak to her mom about their relationship.
