YUUSHA DENSETSU NO URAGAWA DE ORE WA EIYUU DENSETSU WO TSUKURIMASU: OUDOUGOROSHI NO EIYUUTAN

Yukina was a young man who hailed from the same village as the Hero who shouldered the fate of the world. Through a certain incident, he got ahold of the talking spear, Gram. It was a weapon that was on par with the legendary sword the Hero wielded. The first volume of an adventure fantasy of the youth with a realistic growth! (Source: Japanese publisher, translated) — Description from AniList community (anilist.co).