A strong dragon let the Heroes party kill him, feeling he lived long enough. But was surprised to be reborn has a human.
He will now start his new life as a farmer son with the soul of an ancient dragon.
Interesting base... but nothing new. Mc is op thanks to his dragon soul nature and memories. He’s a very calm old soul in a young adult body. Classical OP Isekai. Not bad either.
Sayounara Ryuusei, Konnichiwa Jinsei