Kanaritsu

Ashraf, the hero who defeated the Demon King. Seventeen years have passed since his triumphant return to the royal capital... and the future he envisioned is entirely different from reality!? He can't get along with his subordinates in the Knights, nor can he get along with the new King... When he is finally exiled, the one he encounters is a demon girl who calls him "Papa"...!?

A beast tamer without a familiar, Lock had been supporting his friends in an S Rank party until they finally decided to use him as a decoy and abandoned him. After a conversation with the Fenrir his party was attacking, it chose to serve him as his familiar. By using and expanding the \[Mini Monster Garden], Lock gathers more and more familiars to form the strongest- and cutest- party ever.