As an impromptu dad to Rin, his late grandfather's illegitimate child, Daikichi Kawachi has experienced his share of firsts while caring for his little aunt (?). Now it's Daikichi's turn to battle the initial wave of separation anxiety as Rin leaves the nest.for her first day of elementary school Rin's elementary school isn't the only place with new faces, either. Daikichi's office is also inundated with first-timers, some of whom have their eyes on their gangly new coworker And while father and daughter are experiencing (coping with?) all these firsts left and right, the first anniversary of Gramps's death also sneaks up on the pair. as does the first anniversary of their paths crossing.