Tensei Youjo. Kamikemono to Ouji to, Saikyou no Ojisan Youhei-dan no Naka de Ikiru

Synopsis

This is a bizarre off-world fantasy with a little girl, a divine dog, and a mercenary squad. The story follows Lezay, who finds herself standing alone in an unfamiliar meadow upon awakening. She soon meets Ranag, a massive and divine dog that becomes deeply attached to her. The two are taken under the protection of Alragia's mercenary troop, consisting of muscular mercenaries who appear seemingly on a mission to subdue Ranag, but instead find themselves entangled with Lezay and their newfound bond.