Magical Explorer, Vol. 1 (manga): Reborn as a Side Character in a Fantasy Dating Sim

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