Achnologia reborn in Seven deadly sins

After using his breath attack on the puny humans that were on the island he found himself in a white space and was told that because he had tried to kill all dragons and then attacked humans who did nothing to him he was to be punished by being reborn in another world where it it is deemed he has learnt his lesson he may be sent back and if not he would spend all his next reincarnations as a weak human with no power to fight, and with that he was sent to his new world in the firm of a human baby with only 1/4 of his magic so he can learn the hardships others must go through and experience what he made others feel