Kouta Saeki
He appears bright and cheerful, but he has a masochistic side that he's unaware of.
Fearing that his infertility may be the reason they could not conceive, he found the male fertility clinic "Fig".
Thanks to Dr.Tazaki, they finally have a child. He and his wife are enjoying a fulfilling life, raising their first child.
Kouta is sticking with the treatment so that they can have another baby.