Zensei de Kazoku ni Megumarenakatta Ore, Konyo de wa Yasashi Kazoku ni Kakomareru

The protagonist, who was raised as an orphan and died without ever knowing the love of a family, is reincarnated as the beloved second son of a noble family—Ares?! His parents adore him, and his older sister and brother are always by his side. Growing up in a household overflowing with love, Ares’ life is a complete 180° from his previous existence.