MC reincarnates into a galge as a minor villain and brother of Heroine. He gets his memory back when he sees the heroine for the first time and gets on the job right away to break his death flags. He has a system which gives him points for getting affection from other people and has a shop which he can spend those points in. Points are also spent in the earlier part of the story to upgrade his "potential" from tr*sh to MC level and everytime he has to breakthrough the cultivation ranks he has to use points for "safety" reasons.

Main plot is that there are 2 god level entities who are squabbling for control of the planet with their proxies since they themselves are in hibernation. MC is trying to prevent their followers from awakening the gods and pull out his death flags at the same time. He also is able to hook up with the heroines while doing this since Author wants it.

He doesn't really pay attention to the events of the actual game too much beyond the major ones so this is a little different from the other stories where the MC has foresight and plays the plot to their advantage/tries to keep plot consistency. None of that here.

The story ends with him getting married to his harem off screen (we only get the prep until the wedding begins in an epilogue chapter)

Alicia: The sister that starts the story off. She is a main member of one the gods factions. So we have some drama there. Add even more drama due to her being the MCs "sister". She is the first heroine we as readers are introduced to but joins the harem officially last. Most of the story she keeps trying to get past the "sister" barrier. Their interactions in the earlier part of the story when they were still behaving as proper siblings was very cute. Once she is aware of her feelings things shift gears and whenever we see her on screen she while still cute looses the fluffy vibe you get at the start.

Nora: Princess of the country that MC and his family belong to. She falls for the MC since he is the only one who understands her "secret" personality. One of the few instances of the MC using his game knowledge towards his benefit. Again her interactions with him before she falls for him were very unique since she is a sad*st and likes to treat MC as her pet. No hardcore stuff just the way the dialog is. She will not disrespect him or look down on him, it is just her asserting her ownership on him most of the time. She is also MCs childhood friend.

Charlotte: Daughter of the head of a merchant group that "rules" a neighboring country. MC unknowingly saves her father using one of the system items since he was looking to make some cash by selling his unique items that he got from the system. That gets her interested in him and she becomes his sponsor financially once she falls for him. She was MCs fiance as discussed by elders in the family but due to MCs villanous reputation before the awakening of his memories she initially has a bad impression of him and comes to break off the engagement by buying the MC off after learning that he is in need of money. MC also agrees since he really does need the money but she falls for him before they can go through with the contract so she just supports him anyway. She is my personal favorite due to how cute she acts with the MC.

Lilian: Princess of another country neighboring the MC's country. She is MC's senior at school and gets interested in the MC after observing his upgraded talent. She is also the older sister of the original Protagonist of the game that the world is based on. She is bloodline kin with the MC which is to say she is another "sister" character that just doesn't have the same parents as the MC. She starts as cold and calculating and tries to push the MC down since he is a noble of the country that her home country is hostile to. MC also takes in the game's original MC into his faction that she doesn't like as she doesn't like a royal of her country working under a noble from a hostile country. She r*pes the MC and gets pregnant with his child after falling for him since she knows that their countries are in a hostile relationship and it is not possible for them to get married. After MC finds out about it he convinces her to become lovers and she works towards the goal of making sure that she can marry the MC in the future.

Wilhelmina: She is also a princess from a foreign country. She has been instructed from birth to be a retainer of the MC and act as his bodyguard to the extent of giving her life if needed. She isn't alone in this and has a whole crew of friends who help her with this same goal. She falls for the MC after the MC tells her that her life is just as important as his own and puts his life on the line multiple times to save hers.

He literally defeat god lvl enemy (yeah, I know it's not last boss lvl) yet still struggle when facing his sister and his ancestor. Well the ancestor should slap all enemy when she was alive if she's as strong as MC who defeated god lvl enemy. Author really like to deliberately make MC weak even though he's one of strongest human in that world by using excuse of his trancedent lvl. Heck he defeat enemy that other person with higher trancedent lvl than him couldn't.

which was when the FLs were fighting over the ML and when they asked him to choose, he dead ass started crying like a baby

only the male lead with an adult mind is the only one to throw a tantrum, the girls are pretty calm and calculating throughout, depending on the plot

The author writes a lot of info about the world, I can't say it's bad cuz it's called world building and one piece and other well renowned movies/series/books does that

Nora she's a sadistic angel but can't really inflict pain with her sadistic tendencies it's said by a maid, it's actually funny totally a good point.

Alicia:

MC foster sister she's the only true yandere from the female main cast but she isn't in the level of inflicting pain on MC so she end up being a weird type of yandere, she's almost just a kuudere than anything else or a weirdo...

Charlotte is the rich girl she's... just that, now that I think about it... but likes to make clothes to MC and... really can't talk much about her she's the most forgettable but has a nice story arc

Lilian: She's the enemy country princess cold to anyone except her loved one has the same bloodline as the MC overprotective cuz she's also a brocon

Wilhelmina? I remember it being her name, she's the tomboy, wear armor ddn't appear much she's the last revealed harem character it wasn't revealed yet but all tips says that she's muscular, uses sword on a magic world

MC: he is exactly like a virg*n who didn't date anyone in his entire life, is dense and probably a neet.

now after being transmigrated: he is the same but cares way more about his own survival, most reviews actually skip the fact that he didn't date anyone, I know people who never dated anyone and he is exactly like one, he don't get the tips and is dense anyway at chapter 300+ he start to think about it so he get a little bit more on the offensive but not much something always stops him like to alicia is he thinking of her as a sister, the others someone appear to stop the fun even though they ddn't even reach close to... you know...

it's happening a lot of things in this world the entire humanity is fighting some ancient fallen civilization and there's also evil cultists trying to revive a big bad god, it looks like a good plot right? yeah it is but the author prefers focus on other things at least till MC gets strong enough to fight gods hand to hand

All girls aren't yandere but they know better than anyone that MC bloodline makes it hard to have babies and his family end up more on battle than you know (segss)... so they fight each other and don't want to give him to other, like they said "If the trophy is so little why should I share it?"