I was reincarnated while trying to climb the mountain RAW novel

reincarnation in a fantasy world with the knowledge of morim world. It was good at the beginning. It became boring quickly.
Spoiler for the 1st 46 chapter,
He exercised a great technique at infancy but that was about it. No new technique or physical training.
The summoned a spirit at 4, but it was never explained what it did or what spirits did in general. It said be getting stronger but we weren’t told how.
He did teach his family martial arts but were never much focus on their development or techniques.
He met 2 kids in school and the half of 46 chp was them “smiling in amusement” at eachother. 🤷
One of them even dated his sister, the guy is 9 years old 😑. This could have happened in the background but it didn’t.
The school he goes to is supposed to be the oldest in the continent but we saw nothing of it in 4 years.
Lastly, we never got to know what MC wanted to achieve in this life, until now, all we saw was him refusing opportunities, but no motif
Inclusion, everything is vague, the characters a shallow, the power structure is unexplained
3.5/10