Review Detail of Hikik0m0ri in Ascending to Supremacy

I was unable to complete the DBZ arch due to the enormous stupidity of MC. Being in the DBZ universe with a bunch of cheats and boasting that in a past life he became a master of many martial arts in 50 years, in 30 years he reached only 150,000 strength, it even reaches the point that his future self is dying because of his stupidity and laziness. He collects a harem but does not touch any girl even 50 years later, and instead of spending time with them, he trains Goku (it is not clear why), Goku has a son for a long time, but MC instead of at least losing his virginity, he trinerates son Goku, I wouldn't be surprised if some fat asshole fucks his wives behind his back.