Ore wa Mada, Honki o Dashite Inai

The story follows the fourth son of a noble family, often seen as the disgrace of their lineage. Unexpectedly, he’s forced to take over the household after his three older brothers—who were all in the same party—are killed by a meteorite. His remaining sister, refusing to inherit the title herself, disowns her status and instead registers as his adopted daughter. Now calling him “father,” she pushes him to lead the family and finally prove his hidden potential.