Shiro had a weak heart, so she had been bedridden since she was little. A girl from her neighborhood named Kuro would always visit her and keep her company throughout the years. Eventually, Shiro's condition got to the point where she needed a transplant, or else she would die. Kuro then offers her heart to Shiro, and has hers replaced by a mechanical one. This story is about them adjusting to their new hearts and to their feelings for each other.

1-3. Heart no Okurimono (ハートのおくりもの) 
Shiro had a weak heart, so she had been bedridden since she was little. A girl from her neighborhood named Kuro would always visit her and keep her company throughout the years. Eventually, Shiro's condition got to the point where she needed a transplant, or else she would die. Kuro then offers her heart to Shiro, and has hers replaced by a mechanical one. This story is about them adjusting to their new hearts and to their feelings for each other. 
4-6. Futatsu no Rasen (ふたつのラセン) 
Through the use of her research in parthenogenesis genetics, Kita-san from the Sciences and Mathematics Department had been able to have a child with a star athlete in the Physical Education Department, Minami-san. This is the story of how their child and family came to be. 
7-9. Risutaato wa Zero kara (リスタートはゼロから) 
…“She” is not the only one. A young girl, who suffered from a severe case of identity disorder, was abandoned by her parents and came to live together with her attending physician. Despite their peculiar relationship, the two were leading a quiet and comfortable life, until... 
Included one-shots: 
Volume 2: Perfect Communication, I Wish You, Yuru Daizai

A two-volume collection of the mangaka "match" including both one-shots and short series. 

Volume 1: Heart no Okurimono (ハートのおくりもの) [2022-12] 
1-4. Heart no Okurimono (ハートのおくりもの) 
Shiro had a weak heart, so she had been bedridden since she was little. A girl from her neighborhood named Kuro would always visit her and keep her company throughout the years. Eventually, Shiro's condition got to the point where she needed a transplant, or else she would die. Kuro then offers her heart to Shiro, and has hers replaced by a mechanical one. This story is about them adjusting to their new hearts and to their feelings for each other.
 
5-7. Futatsu no Rasen (ふたつのラセン) 
Through the use of her research in parthenogenesis genetics, Kita-san from the Sciences and Mathematics Department had been able to have a child with a star athlete in the Physical Education Department, Minami-san. This is the story of how their child and family came to be.
 
8. Fujimi Ningen no Shuukatsu ~ Fukkatsu (不死身人間の就活〜ふっかつ！〜)
 
Volume 2: Tenshi no Bokujo (天使の牧場) [2023-04] 
1-5. Tenshi no Bokujo (天使の牧場) 
Welcome to Saint Basileia, a school for producing and raising genetically superior human beings! It's here where sacred and profane lineages are curated and one's worth is determined by genes alone. At the top of this hierarchy are the students clothed all in white who contain within them the lineages of angels and saints, androgynous beings called "Nephilim." It is the duty of the other students to provide them with daily care and genetic material to ensure the continuation and perfection of these lines.
 
6-8. Restart wa Zero kara (リスタートはゼロから) 
…“She” is not the only one. A young girl, who suffered from a severe case of identity disorder, was abandoned by her parents and came to live together with her attending physician. Despite their peculiar relationship, the two were leading a quiet and comfortable life, until...

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