Kuro no Senki: Isekai Teni Shita Boku ga Saikyou nano wa Bed no Ue dake no You desu

Kurono Crawford, a noble of Cepheus Empire had a secret. It was that he came from a different world... modern Japan. Having the knowledge about the modern weapons and his sense of values, he was an existence almost like a cheat, aiming to be the Harem king. Abandoned by his superiors, left in comman