Mahou no Iroha! Summary:
Not particularly good at sports, not very popular, and not very good at school, Naoki's middle school years are filled with video games and erotic books. But one day, a cute girl called Iroha appears, claiming to be his daughter from 20 years in the future. Apparently, in the future magic has been discovered, and she has come back in time by magic to protect her beloved papa from a dark future.