Reincarnated Monster Lord

Ah, reincarnation is the worst... [Why am I the youngest son? It's so difficult for me! ] An older, single programmer who acted bravely but died unexpectedly was mysteriously reincarnated into the youngest son of a fallen duke... This is a different world with swords and magic, everything is free from the appearance of modern technological society... In this magical world, Youyi started another life of his own under the "care" of his brothers... [Rebirth and other things are the most annoying! ]