Tsukishima Karyuudo is the 10th diary keeper in Mirai Nikki; his diary is the 'breeding diary'. He was described in the series as an evil grown up who had an obsession with the breading of dogs. He was the father of Hinata Hino - one of Amano Yukiteru's friends and a tech genious- He manipulated her daughter into conspiring to kill Amano, his friends, and eventually the plan was to kill the other keepers. Ultimately Number 10 failed and was killed by number 4 Kurusu Keigo.