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

Eren served as nothing more than a lowly baggage carrier for an elite S-rank adventuring party, constantly dismissed as useless by the very companions he supported. His role reaches a tragic end deep within a perilous dungeon when his party abandons him, deliberately leaving him behind as a decoy to ensure their own escape. Stripped of allies and trapped in a desperate situation with no apparent way out, Eren faces certain death. However, this moment of absolute despair triggers an extraordinary awakening. Eren discovers that he possesses a hidden, unprecedented power, revealing himself to be the sole individual in the entire world capable of wielding the rare class of "Spirit User." Overwhelmed by affection from charming spirits who shower him with devotion, he forms a contract with the legendary spirit Phoenix. Armed with this newfound strength and the unwavering adoration of his ethereal companions, Eren begins his journey to become the strongest at his own pace, leaving those who betrayed him far behind.