Shirohiyo - Reincarnated as a Neglected Noble: Raising My Baby Brother With Memories From My Past Life

Ageha Kikunoi is supposed to be a spoiled young noble, but he suddenly regains memories from a past life and becomes a different child overnight. Instead of chasing comfort, Ageha throws himself into practical skills like cooking, sewing, and singing, using them to reshape the mood of an estate that has treated him as a nuisance. His biggest focus becomes his half brother Regulus, a fragile baby whose future is tangled in family expectations and power. Ageha starts winning over servants, studying how the household runs, and changing small routines that keep the baby safe. As he grows more capable, adults begin to notice him, for better and worse. Ageha keeps pushing forward with one clear goal: protect his little brother and secure a place where both of them can live without fear. Ageha uses his past life perspective to plan meals, lessons, and daily routines, trying to give Regulus a stable childhood before noble expectations tighten around them.