Hmmm not bad. Although very cliche. The ol' main character dies, reborn to an infant, already highly intelligent and skilled below ten. Already a OP 'badass'. Like I dont mind these mangas but sometimes it feels like your reading the same ones. I just hope the pacing is right. That the MC doesnt become an OP Mary Sue with every female character falling in love at first sight. Which again is fine for the right reasons. I like Harem/Romance etc but give reason to fall in love and not the 'badass' stands his ground, 'badass' kills OP enemy with a single sword swipe.
Will have to wait & see. Thanks for the update