Teisou Gyakuten Sekai nara Moteru to Omotteitara

"A World Where Chastity is Reversed"—A dream world where the male-to-female ratio is 1:20, women have stronger sexual desires, and precious men live a smooth life protected by their bodyguards. Fifteen years have passed since Ikuto Ichise was reincarnated into this world. That should have meant a guaranteed harem, but for some reason he isn't popular. Ikuto laments that it must be because his bodyguards are all handsome men, especially his childhood friend Rui Toosaka, who is particularly high-spec. But there may be more to Ikuto's bodyguards than meets the eye. Ikuto is completely unaware of what's going on around him, and his overly friendly, unguarded behavior leaves the people around him flustered and hopeful. As he goes about his days, he unintentionally draws more and more attention. Meanwhile, Rui is dealing with some complicated feelings of their own.