Valhalla Otintin-kan

Story:

Valhalla Otintin-kan Shota Iijima picked up a mysterious erotic book during his childhood and has since then developed a severe fantasy onee-san fetish. Thereafter, from the years between his age of 12 to 15, he masturbated 999 times. For his 1000th round of masturbation, he had been transferred to a different world and is sold as a slave. WARNING: Tomoshibi liberally translated and rewrote this series drastically, many important facts were deleted. Example: The average dong size in the other world seems to be far lower.