Retired S-rank father becomes a teacher

At 16 years old Silas was involved in the mana awakening. Magic, Dungeons and the world turning upside down. Well it only took four years for Earth to return to its former state. Electricity was replaced by mana cores and a new job replaced doctors as the most prestigious: Dungeon hunters. At 20 years old Silas was one of the few S-rankers that saved the world and naturally he caught the girl. A little too well. There were still dungeons to be conquered but Silas had diapers to dispose of and whatever that stain on his shirt was. Thus the S-ranker who specialized in space magic disappeared from the news. 18 years later, he was free to get rid of the dad bod, get up from the couch and reclaim his title. But his daughters, Victoria and Katherine, refused to become a doctor and instead wanted to follow in his footsteps, straight into the dangers of the dungeon. Expect smut, incest, overpowered mc. No Ntr, Yuri — Description from novelcodex.org