Mahou no Iroha

Naoki is an unremarkable middle school student who struggles with sports, popularity, and schoolwork, spending his time playing video games and reading erotic books. His routine changes when a cute girl named Iroha appears and says she is his daughter from twenty years in the future. Iroha explains that magic has been discovered in her time and that she has traveled back through time by magic to protect her beloved papa from a dark future.