I thought a single strike meant blowing the enemy away with one punch, but in reality, I would be exhausted after just one hit.
Ultraman: "Dura dura dura~ Sorry, my three minutes are up. I have to..."
Protagonist: "Sorry, this punch might kill you. But if it doesn't, I'm as good as dead!"
The ability to accumulate power: the longer it is stored, the greater the strength.
Dreams leading to the world of pirates help the protagonist in a high-martial world grow stronger and stronger.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
The author had better change the setting to retain the original power after using up the accumulated power, otherwise, it will be a bit of a trap.