TV series

17.3 about a sex

Latest episode

S1 E9 · 17.3 years old. We're not at an age to say, "we don't know anything.

Thursday, October 29, 2020

About 17.3 about a sex

17.3 about a sex is a drama TV series that premiered on ABEMA on September 17, 2020. It has 1 season and 9 episodes so far and has ended. The latest episode, Season 1 Episode 9 "17.3 years old. We're not at an age to say, "we don't know anything.", aired on October 29, 2020.

"The world average age for the first sexual experience... 17.3". Is that early? Late? Seno Sakura has a serious personality. Hara Tsumugi has never liked a member of the opposite sex before. Minagawa Yuna is experienced and is currently dating a company employee. At the age of 17, the girl's "sexual values" begin to fluctuate.

Drama

Last updated October 10, 2026

Episodes

9 episodes · 1 season

Season 1

2020 · 9 episodes · Last episode: 6 years ago

Three 17-year-old best friends with differing attitudes toward sex learn to navigate love, intimacy, romance and womanhood in a complicated world.

17.3 about a sex Season 1 release dates →

E9

9. 17.3 years old. We're not at an age to say, "we don't know anything.

Finale 6 years ago

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.
E8

8. Dropping out of school due to pregnancy. Why only girls?

6 years ago

Sakura worries about her friend Narumi after learning that Ryusei got her pregnant. When Narumi faces expulsion from school, Sakura makes a bold move.
E7

7. Boys, have you ever had a haemorrhage for a week?

6 years ago

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.
E6

6. Is breast size really that important?

6 years ago

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.
E5

5. Does gender matter when falling in love?

6 years ago

Feeling confused about Yu's sexual orientation, Sakura consults Tsumugi and Yuna. Later, she blames herself when rumors about him spread at school.
E4

4. Frankly speaking, do girls masturbate?

6 years ago

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.
E3

3. Is it bad for girls to have a lot of experience?

6 years ago

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.
E2

2. Is having sex really necessary in the first place?

6 years ago

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.
E1

1. Graduation from Virginity at Age 17.3. What do we do now?

6 years ago

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.

Cast & crew

Oto Abe

Woman
Toshihiro Yashiba

Tsumugi's Father
Sei Ando

Clinic Doctor
Maki Kubota

Clinic Nurse
Jun Matsuo

Student
Yuito Takeuchi

Student
Sena Gotō

Student
Yuta Hayashi

[Student]

17.3 about a sex FAQ

Will there be new episodes of 17.3 about a sex?

17.3 about a sex has ended, so no new episodes are scheduled. The final episode aired on October 29, 2020.

When did the latest episode of 17.3 about a sex come out?

The most recent episode of 17.3 about a sex, Season 1 Episode 9 "17.3 years old. We're not at an age to say, "we don't know anything.", aired on October 29, 2020.

How many seasons of 17.3 about a sex are there?

17.3 about a sex has 1 season with 9 episodes in total.

When did 17.3 about a sex first air?

17.3 about a sex first aired on ABEMA on September 17, 2020.

How do I get notified when new episodes of 17.3 about a sex are released?

Download the Streambay app, follow 17.3 about a sex, and you'll get a push notification the moment each new episode is released.

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Show info

Status: Finished
First aired: September 17, 2020
Last aired: October 29, 2020
Seasons: 1
Episodes: 9
Network: ABEMA
Episode length: 29 min
Language: Japanese
Country: JP

More new ABEMA releases →

TMDB IMDb

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17.3 about a sex

About 17.3 about a sex

Episodes

9. 17.3 years old. We're not at an age to say, "we don't know anything.

8. Dropping out of school due to pregnancy. Why only girls?

7. Boys, have you ever had a haemorrhage for a week?

6. Is breast size really that important?

5. Does gender matter when falling in love?

4. Frankly speaking, do girls masturbate?

3. Is it bad for girls to have a lot of experience?

2. Is having sex really necessary in the first place?

1. Graduation from Virginity at Age 17.3. What do we do now?