WHO'S YOUR NANNY? Kirishima Tooru is the right-hand man of the Sakuragi crime family. For him, the job is a perfect excuse to let his violent instincts run wild, earning him the nickname "the Demon of Sakuragi". It seems like nothing will stand in the way of his vicious nature. But then one day, he receives an assignment like never before from the boss--babysitting his daughter! This is the heartwarming (or is it bloodcurdling?) story of a little girl and her yakuza caretaker!
An unlikely pair! On the surface, he's the babysitter for the boss's only daughter Yaeka, but Kirishima is really a member of the yakuza by trade. Thanks to Kirishima's persuasion, Yaeka finally resolves to visit her mother in the hospital, where she shares the feelings she's built up over the past three years. Join this unlikely pair as they make Valentine's chocolates with the gluttonous high school girl Ayumu, become reunited with Kirishima's own former babysitter, and even meeting Yaeka's first friend!
A GUARDIAN ANGEL OF VENGEANCE Kirishima has grown accustomed to being a babysitter, the distance closing between his and Yaeka's hearts. But just as he finds himself being changed by Yaeka's innocence, tragedy strikes...and reignites a fire inside him. Will this unexpected turn of events bring the two closer together, or will this be the catalyst to reawaken the Demon of the Sakuragi family?
BABYSITTER BLUES Kirishima goes missing without a trace--so it's up to Yaeka and Sugihara to find him. Though the incident that caused Yaeka injury seems to have been settled, it still weighs heavily on Kirishima's heart. But thanks to Yaeka and Sugihara, they might just be able to return to their peaceful everyday lives at last.