Nageki no Bourei wa Intai Shitai - Saijaku Hunter ni Yoru Saikyou Party Ikuseijutsu

From Yen Press: In a land where treasure hunters scour vaults appearing from the past, Krai Andrey and his friends swore a childhood oath to become the mightiest heroes of all. There’s just one problem: While his old companions have become living legends, Krai is the poster child for mediocrity and he knows it! But despite his best efforts to leave the treasure-hunting life, he has gained quite the reputation by association and with it, enormous expectations. Can Krai pursue his dream of retirement or is he destined to fail forever upwards? Original raw