Koipon! Inochi Mijikashi Koiseyo Ponpoko

Fukuko Kinuda was supposed to be just a normal, chubby girl. She was born and raised in a normal household and she was going to celebrate her 14th birthday in a normal way. But on that day, her family told her a terrible secret. She was told that she and her family are descendants of tanuki spirits. What a mess! (Source: Margaret Comics, translated)