『君は勇者になれる』才能ない子にノリで言ったら、本当に勇者になり始めたので後方師匠面して全部分かっていた感出した

The protagonist has been reincarnated and has been a hero all along. At first, he was motivated and had a haughty personality, but gradually, his motivation waned. He could defeat the Demon Lord with a sense of playing a game, but various complaints and the loss of motivation have plagued him. He wants to retire as a hero, but he can’t easily give up due to the deterrent force. So, he came up with an idea to create a new hero to take his place.

He tells one lie: that he is gradually weakening due to the Demon Lord’s curse…

“What!?”

The disciple is shocked. The world changes with just one lie from him. It’s a story about an invincible protagonist who wants to retire and attempts to lie about weakening to stop being a hero.