While having a difficult time at the bath house, Akiyuki, a young and stressed single father, is approached by Tarouemon who offers to help him with his twin daughters, Mikan and Lemon. After meeting again, Taro reveals he no longer has a place to love after the owner of the store he worked at died and he ask to stay with the family in exchange for cooking and babysitting.
At school, Hino is seen as a delinquent, but the real Hino is a caring, family-oriented student who helps look after his nephew, Satoru. After being hit with and tasting the pudding Mizusawa made, for the sake of Satoru who loves sweets, he asks him to, "Please marry my older sister!" But, Mizusawa would rather marry Hino.
Kindergarten teacher Kiri has always been unlucky in love and after, once again, being abandoned by his boyfriend, he stumbles across a wife yelling at her husband. After comforting the soon to be divorced man, they end up having a one night stand. The next day, they meet again when the man, Raion, comes to pick up his son Taiga, who has a crush on Kiri, at Kiri's kindergarten.
Childhood friends Chiasa and Kazuma have been dating for 8 years. When they're reunited with their childhood friend Tomoe, she is heavily pregnant and doesn't know who the father is, so the couple agrees to help her while she's pregnant. But, a year after the baby, Ayumi is born, Tomoe suddenly ask the to take care of her. The two begin their life as parents.
Elementary school teacher Hitsuji meets Hatoyama, a flashy, single father, when he brings his son, Hinata, to school late. Hinata doesn't acknowledge Hatogaya as his father and Hitsuji realizes Hatogaya might be having some problems as a single parent, when he runs into him at the store. So, he goes to Hatogaya's house to talk to him, but while talking he finds out Hatogaya is actually his former classmate and first love.
Continuation of Motoyan Papa to Hitsuji-sensei
On the was home from work, Aoi, a man raising his dead lover son, Ushio, finds a lost puppy and picks it up to look for its owner. But, when it runs off, it lead Aoi to a shrine with a mysterious man, who tells Aoi he shouldn't return. However, Aoi can't help feeling drawn to the man, who somehow feels similar to a dog his family had in the past.
Yura picks up his nephew Kanata on his way home, but is annoyed by Kanata's unsociable kindergarten teacher Kaji, who only smiles at the children and bluntly points out Yura's noticeable unrequited love for his coworker. However, they start getting along after Yura must rely on Kaji when Kanata gets a fever and Yura panics, not knowing what to do. Yura learns Kaji's true feelings when they run into Yura's ex, who insults Yura for being gay, and Kaji pretends to be his boyfriend.
After the death of his parents, Shouta starts raising his 3 year old brother, Fuuta, but has trouble making enough money to do so properly. One day, Fuuta runs into the street and is almost hit by a car. The driver turns out to be rude, but world renowned architect Tetsuaki. When Tetsuaki is being hunted by the media, he asks Shouta to hide him for 1 month. After few days, as a way to help Shouta earn money for Fuuta, Tetsuaki offers to give him 50,000 yen each time they have sex.
Before a solo exhibition, photographer Ryotaro is taken to a drag bar, where he finds Wataru, a high school senpai he began to desire after seeing him in red heels, working as a crossdresser. When Ryotaro defends Wataru from a violent customer, he's fired and his exhibition is cancelled. Wataru says he'll compensate him, but Ryotaro offers a deal where Wataru does nasty stuff with him once a week instead. Unable to pay, Wataru, a single father and grieving widower, reluctantly takes the deal.
Gakusei Papa to Oishii Otoko