A young swordsman, Karasumaru Yoichi and his father live on a mountain, training for his descent from the mountain. One day, Yoichi travels to the city to move in with four beautiful sisters. A new, more severe "training" regiment awaits him.

Asu no Yoichi reminds me of sosuke sagara from fmp except remove the military training and make him an expert at swordsmanship who has lived in the mountains all his life instead. same can be said for ibuki being like chidori.I will probably skip this manga (Asu no Yoichi) for a while and check back later on the romance department.