We have all read and seen our share of Isekai stories. And despite the consensus that isekai is a genre filled with lazy writing, shallow wish-fulfillment, and unoriginality, there are a lot of excellent and interesting stories to explore the concept.

This is not one of such stories.

With title to put light novels to shame, this story brings nothing new to the table and does everything you really expect from it but then also completely fails to follow it's own supposed plot.

The story follows a young boy, 15 years of age, and dreaming to have a peaceful life as a simple adventure. Except this boy is actually the reincarnation of a legendary powerful hero that has slain the demon lord! And that hero was the reincarnation of a legendary sage who knew all magic! Naturally, the kid remembers both his previous lives. Sadly and very wacky, he doesn't seem to grasp the concept of being normal and just casually kills a large dragon and stores it in his magic bag that he made and no one else can make.

In short, the hero is extremely overpowered and the joke is that he just wants a normal life but can't help but casually be the most overpowered being in the universe and fails to realize he is doing so. A plot we have seen plenty of times before and done better in generic isekai stories like Kenja no Mago.

Overall, don't bother with it. You deserve to spend your time on something better.