Manga Botsuraku Youtei Nanode, Kajishokunin Wo Mezasu

After his death, the main character is reborn as a character in a computer game, which he loved to play all his past life. He knows that this character will die after spending all his last years with the villainess. The man's name is Kururi Helan.
At the same time, the game has absolutely no details about how this minor character will interfere with the villainess, and why he will die. However, it still doesn't make any sense. He is not going to live as a needy farmer, so he decides to just find a profession that is in demand. He wants to become a blacksmith, because he used to be excellent at just that.