Magical Explorer, Vol. 1 (light novel)

Reincarnated as a character in the legendary erotic game, "Magical Explorer,"" it doesn't
take long for our hero to discover that he's been designated the unlucky side-character
rather than the game's lady-killer protagonist. Not to worry, though! Armed with his
vast knowledge of the game (and a few cheats) he'll do whatever it takes to win the
hearts of the game's heroines and emerge as the most accomplished student at the
Sorcerer's Academy!