A succubus is a dream lover who guides men to intoxicating pleasure.

Due to an unforeseen accident, 17-year-old Horai Riichi loses his life and is mistakenly reincarnated as a succubus by the Reincarnation Support Department. To survive, a succubus must drain and consume the life force of men. However, Riichi, having once been male, adamantly refuses to do such a thing, even if it means his death.

Do any foodstuffs exist that can substitute for life force?

They do! And surprisingly, it’s—milk!!

However, in this other world, not only was there no custom of drinking milk from other species, but the very species "cow" didn't exist at all.

Although the Reincarnation Support Department makes a special exception and provides him with just one dairy cow, Riichi finds himself forced to live in a harsh new world, risking his life to raise this cow—his very lifeline—all while resisting his succubus nature.

What's more, it seems that cow wasn't an ordinary creature either...

Contrary to his desire for a peaceful life, Riichi eventually finds himself embroiled in a conflict that will determine the fate of the world.

His best friend, who was involved in the same accident, also reincarnates later, but both have changed forms and cannot recognize each other.

Will Riichi ever be able to reunite with his best friend—!?

And if they do reunite, can their friendship be the same as it was in their previous life—!?

A completely new kind of overpowered abilities and romantic comedy begins here.

(★ indicates illustrations)

Published as a book by Monster Bunko on July 29, 2017.

A manga adaptation began on October 20.

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