@Cactus dam.. we got same taste in manga/ Manhwa it seems.. and I read every single thing you suggested except memoir of the king of war.. haha..    well, will try out the list in the link.. love you.. have a wonderful day.

@ZUCK MY DECKKKKKKKKKKK I get your point, but how do you know he wouldn't go being trash to others again.. let me tell you, no one likes the idea of being seen as a jerk by their crush, so a person's character is judged not only with crush, lovers, rather everyone.. also yes, he is broken character, but long term behavior turns habit, and habits are hard to stop.

i am saying until and unless the author shows he changed like after a year or two.. cutting him slack is just unfair to all previous people who he hurt.. 

well there is no point in this conversation between us, haha.. since I am jobless I have all the time in the world to comment useless opinions of mine.. don't mind it.. 

@Sun you just found that out after 19th chap??

@Paru_habibi wow what a greatest green forest.. sure sure it's so green and lush that I cannot see it well..

@ZUCK MY DECKKKKKKKKKKK obviously he isn't bad to the person he realized he liked.. what about others?? Did he apologize to those previous people he hurt.. we don't know.. so we can't exactly say he is good or bad, according to plot till now he was jerk, you should look at his reaction to only main couple.. you should look at all relationships.

@sasha let's say you got into an accident and got your leg broken, so you go around breaking other peoples leg.. then you for just one person, you felt oh sorry, I love you I don't wanna hurt you.. so you say that you wanna treat his leg etc.. but the injured himself is treating it with other doctor, and you go and fight a bit andgive advice to that other doctor, to treat him well cause I couldn't etc..

just how and where do you think he deserves bit sorry.. he deserved sorry.. yes.. but he tilted toward total jerk than pitiful at this point.. one accident and many accident.. which is greater..

Comment your opinions or suggestions too

@Cactus if it's about this same genre, I have to think a bit..  https://mgjinx.com/manga-list/51986  (might help)
but I can give great recommendation of other genre, 
1. Greatest Estate Developers 
2. I was mistaken as a monstrous genius.. (different and grest, ongoing)
3. All hail the sect leader 
4. Heavenly Grand Archive's Young Master 
5. Life of Magic Academy Mage

@Dewani90 she suck at being a decent human being in first place.

@LURMERFUR sorry for dislike.. mistake.

@Ana wow hypocrite, for MC, we are aliens alright, if alien come to our planet, out first thought would be whether they are controllable, are they a threat, can we slave them away.. if they can't they will fight, or go for negotiations.. 

inshort the strong wins, MC wants to grow strong that's it.. what's with bad alien, even among humans, we separate each other with country etc and go to war, you calling MC bad is offensive..
I get it that if we were in ship we would die too, but in first place humans are there to kill other aliens, so they should expect themself to suffer too..