Manga by author Urasawa Naoki - Status ongoing

Billy Bat is a comic-in-a-comic and the real protagonist is a Japanese-American artist named Kevin Yamagata who draws Billy Bat for "Marble Comics". Shortly after they transition to the artist in his studio with his assistant, two actual detectives, who look like Laurel and Hardy in Dick Tracy era suits and trench coats, knock on the door and appropriate Kevin's room for the purpose of conducting surveillance on a room in an adjacent building. One of the detectives, the skinny "Laurel", sees Kevin's work and it turns out he's a Billy Bat fan. The other chubby "Hardy" detective picks up a page and says that the characters look familiar and accuses Kevin of translating an old "Jap" comic. As Hardy remembers the comic he thinks Kevin is ripping off, we make another Urasawaesque time jump to 1949 Tokyo and the chapter ends.

The story is about Yawara Inokuma , a young girl who aspires to an ordinary life but who, due to her innate talent, is forced to keep practicing judo by her authoritarian grandfather, Jigor? Inokuma, with the aim of achieving championship in Japan and the gold medal in the Barcelona's 1992 Olympic Games. Because of all the pressure from her grandfather, she has a generally bad attitude about judo, avoiding it as much as she can. However, as the manga continues, she begins to understand why her grandfather so loves judo, and she begins to appreciate it more.-From Wikipedia

Asadora! begins the story of a young girl's life in post-war Japan, which will span several decades into the present day.