She's the Strongest Bride, But I'm Stronger in Night Battles: A Harem Chronicle of Advancing Through Cunning Tactics (Manga) Vol. 3

The reincarnated Albert is happily married to the sexy, bloodthirsty Blood Demon Lady Marida. He's the brains behind her brawn, using his tactical expertise from his former life to grow his wife's power and her harem of gorgeous women (which she loves to share)! Will Albert's scheming put him on the wrong side of Lady Marida's father, the Demon Lord? It's the third act of this naughty harem romp!