My Stray Dog Devours Monsters

After rebirth, Rowan awakened the Aberrant Contract System and wanted only to protect Lucan. He took in a stray dog, Nighfang， who’s actually a Class-S Aberrant. When Nightfang devoured a Class-A Aberrant and Lucan became Class-SS, Rowan realized his little brother was no ordinary kid. Meanwhile, his ex and corrupt military scum eyed his home.