Sekai de Ichiban Dame na Koi / 世界でいちばんNG(だめ)な恋

Yoshimura Osamu, the hero of 29 years old, walked home drunk,
having tasted the green serpent because of her hardships of life, his wife left him, was fired from work.
On the way, he met a kind and beautiful woman, Hinosaka Honoka, who tried to console and cheer up the hero.
Before they parted ways, she mentioned that if he needed to stop somewhere, let Osamu find her.
The hero is amazed at such kindness and decides, after three months, to accept the offer.
Her house turned out to be a boarding house, but unfortunately Honoka herself was not there -
instead, the hero was expected to meet with Honoka's teenage daughter, Mitoko.
She at first met him with hostility, deciding that he was the man with whom her mother ran away,
leaving the girl alone to look after everything and everyone.
Sympathizing with Mitoko, not to mention Osamu's decision to live in a boarding house,
the hero decides to stay and help the girl until her mother returns.
The story will touch on Osamu's past, his actions as an adult,
the formation of Mitoko's character with the support of other tenants and the hero.