Read ch1-11 (translated), raw (google translated) up to ch32.
The best way to describe the MC life after his first life is that the Reincarnation God screw his reincarnation up, plain and simple.
MC in this 3rd life (reincarnation), has two major goal in mind: find happiness and revenge while growing up.
Here are some detail on the MC:
1st life (Earth): Both of MC parent are dead and MC live with his family relative that only taking him in due to his parents life insurance money. He is treat like an outsider and only given the minimum necessaries for life and school and was told to get out (of the house) when he graduated from high school. MC die in terrorist attack as a teen.
Intermission (reincarnation time): Due to Reincarnation God mistakes, mismanagement, and Irresponsibility by giving all the blessing the MC suppose to have to another person who have similar name as he; He (God) then state that he have no more blessing to give and he hope our MC don't mind it and also state that our MC will be worse off in the next life then before but still hope our MC don't mind it.
2nd life (advance science and magic world, more advance then Earth): Was sold as child by his mother by the advise of her boyfriend for quick cash. Was bought by some organization and from then on he was treat like a lab rat for human experiment. He die pre-teen during a experiment but awaken as undead due the discovery of his unknown magic power where he has his revenge on those that treat him like a lab rat. However he was killed (as an undead) by the same group of reincarnate people who got the blessing of the god including the person who has the MC blessing.
Intermission (reincarnation again time): Reincarnation God knew our MC will die early but for some reason still didn't give anything to our MC. Instead, hope our MC forget about it and "put everything under the rug" and curse our MC so he can kill himself early in his 3rd life so he (god) can fix his mistake in the MC 4th reincarnation by removing all of MC past memories and life experiences and start reincarnation as blank state. Our god also hope that our MC give up his revenge on the other reincarnation people (another reason for the curse) because he have plan for them.
3rd life (magic and sword world, current): Father (vampire, lowest rank) dead, Mother (dark elf) dead (and currently a spirit at where I'm at in the chapter). Due to his mix-blood, his mother try to rise our MC in secret before moving to a safer place but was betrayed and was killed when she about to move out. Our MC was a only few month old when it happen, and only able to preserve his mother spirit onto one of her original bone in hope to bring her back alive again later when he grow stronger. Due to the curse, our MC can not get stronger through normal mean. Our MC just want to live normally for once in his life, for real.
Cautious Themes: up to raw chapter 32.
Killing: it a fantasy world, of course
Sex: imply but not shown or stated (not imply much either)
Rape: imply alot before it happen or already happen but not show or stated
About MC:
The MC is sound person unless is about revenge then our MC more like a madman. Our MC (from the 1st life personal interest) have an interest in muscle and dream of having some (muscle = manly = strong).
There are still a few questionable action done by our MC that questionable to a normal person but then again; our MC is child and never experience family love in any of his previous life so of course his action wouldn't be normal.
overall story is decent if not sad for some part, a good read