Tales of a Harem in Another World - Anthology 2

Naoki Oikawa was busily fapping away to his naughty porn mags when he was suddenly transported to a fantasy world filled with demon lords, monsters, and... sexy babes? Join the ostensible MC-turned-hero as he helps his comrades defeat the demon lord by using the power of his own semen!

This is the second anthology compilation containing volumes 4 and 5, as well as the side story quest featuring Natalia!