S-Rank Boukensha de Aru Ore no Musumetachi wa Juudo no Father-con Deshita

A young A-rank adventurer named Kaiser discovers three infants who are the sole survivors of a village that was destroyed. He quits his career and takes them in as his own. As they grow, the girls display remarkable abilities in swordsmanship, magic, and business. They also appear to have a strong affection for their father, Kaiser.