A selfish, despised noble known as the “White Pig” for his gluttony and cruelty dies in disgrace—only to wake up as a child again, memories of a past life flooding back. Now armed with the wisdom of a former modern-day Japanese citizen, he must raise his timid, neglected younger brother from a life of abuse and prepare him for a future where their family’s ruin is all but certain.
Fans of Ascendance of a Bookworm , The Savior’s Book Café in Another World , My Next Life as a Villainess , and anyone who loves “found family” + “raising a child” plots with a realistic, heartfelt edge.
The protagonist, Regulus Fenrir Ainsworth , was once the reviled first son of a marquis family—overweight, arrogant, and stupid. After dying from overeating at a banquet, he reincarnates? No, he simply remembers : a previous life as Tanaka Kaito , a hardworking Japanese office worker who loved cooking, budgeting, and caring for his younger siblings.
Here’s a solid, detailed write-up for the manga:
But as Luciel begins to smile and speak more, their parents grow suspicious. The engagement to a cruel noble girl looms. And someone from Regulus’s original “bad future” timeline seems to have noticed the changes…
Shiro Buta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otōto Sodatemasu (“I’m a White Pig Noble, but I’ve Gained Memories of My Past Life, So I’ll Raise My Chick-Like Younger Brother”)
Using his past-life knowledge, Regulus makes a solemn vow: He’ll lose the “white pig” weight through proper nutrition and exercise, outmaneuver the scheming adults who want him dead, and—most importantly—raise Luciel into a strong, kind, and confident young man. From cooking homemade meals and teaching basic math to confronting abusive tutors and planting secret vegetable gardens, Regulus builds a quiet revolution inside the gilded cage of nobility.