Summary Valhalla Otintin-kan from Zinmanga X
Valhalla Otintin-kan summary: Shota Iijima picked up erotic books during his childhood and suffers from a severe foreign sister 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.
