E, Tamer wa Tsukaenai tte Party kara Tsuihou shita yo ne? Jitsu wa Sekai Yuiitsu no "Elemental Master" dato Hanmei shita Totan ni Tenohira wo Kaesaretemo Osoi. Seirei no Oujosama ni Mechakucha Dekiai sare nagara, Boku wa My Pace ni Saikyou wo Mezasu node

I'm being showered with too much love from charming spirits!! I'm the only one in the world whose job is "Spirit User"!? Eren, a baggage carrier for an S-rank party, was left behind as a decoy to help them escape the dungeon because he was useless. In a desperate situation with no escape, he awakens his hidden power as a "spirit user"! He makes a contract with the legendary spirit "Phoenix" and becomes the strongest.