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ヒヤマケンタロウの妊娠
在广告代理店工作的桧山健太郎（斋藤工饰）突然怀孕成为“孕夫”。而他的伴侣濑户亚季（上野树里饰）从没想过要当妈，两人都有些不知所措。在对男性怀孕充满争议的社会中，健太郎受到公司和社会的审视，并将感受孕妇所经历的艰辛。面对现代怀孕和分娩带来的诸多问题，两人将不得不面对现实。
Kentaro Hiyama attributes his success to his ability to plan out every aspect of his life — but then, something completely unexpected happens.
Morning sickness and other bodily changes start to affect Kentaro's work. He finally meets up with Aki and tells her about his pregnancy.
While at the hospital, Kentaro meets another cisgender pregnant man and the two become friends. The client is unimpressed with Tanabe's ideas.
The ad campaign featuring Kentaro is a huge success, making him famous. With Miyaji, he launches an online community for pregnant men.
Aki goes home for her sister's wedding and ends up butting heads with her conservative father. On her way back to Tokyo, she gives Kentaro a call.
A figure from Kentaro's past comes back into his life, causing friction with Aki. She then finds out about a great job opportunity — in Singapore.
Aki makes a decision about the job in Singapore. Kentaro holds a press conference to apologize for the scandal caused by his father.
Kentaro goes into labor and is rushed to the hospital. Kentaro's parents and Aki wait together for the baby to be delivered.
