I Somehow Have Three Daughters!

The male lead dies unexpectedly and arrives in a future world with the memories of his previous life. He is always doing things that no one expects, perhaps because his memories are jumbled. Following his older brother, he gradually learns about this world, joins him on interstellar voyages, and faces unknown species. The male lead may have been an ordinary person in his previous life, but in the future he can finally let loose. His father even suspects at one point that they took home the wrong baby. One day, the male lead sees a familiar face: the person he loved most in his previous life. This is a classless future where everyone is equal. Each person has an AI companion for life from the moment they are born. There's no need to study like in the old days. People grow through traveling instead. The most outrageous thing is that there is no money here! How are you supposed to buy things without money? Contribution points? Is that just another kind of money? Only after looking into it does he learn that they can't simply be used as money. Faster-than-light travel, space wars, interstellar raids, the various races...

This novel and its characters are entirely fictional. Any resemblance to actual persons or events is purely coincidental. Do not imitate.