[Reborn!] Which Way Should I Go?

Blurb Fifteen-year-old Lambo is sent by Johnny II's time machine to an era before Reborn turned into a baby. The young Ninth Generation Boss asks Reborn, then an Outside Consultant, to look after him. Lambo, who has had a crush on Reborn for a long time, gradually falls in love with the Reborn of years ago. But the time machine's limits force him to return to his own time. The Reborn who now shares Lambo's era has no memory of ever being with him. Lambo finally works up the courage to confess to Reborn, only for a malfunction in the Ten-Year Bazooka to leave him stranded in the world of ten years ago...