(Average+) The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat

NOTE: Stopped watching after episode 9.

Series in one sentence:
Man who wishes to no longer be a tool for killing agrees to become a tool for killing and gets reborn within a family that wants to raise him as a tool for killing.

Series in more sentences:
The best assassin in the world is betrayed and killed by his own organization before he's able to enter retirement, but his fleeting soul is summoned by a goddess, who wishes to make use of his services and kill her world's hero; destined to go rogue and destroy all of existence.

Wanting to take this opportunity to have a new life, free from being emotionless and other people's tool, he agrees to get reincarnated and save this other world from doom.

Surprisingly slow start for a genre that likes to rush things.

It was alright, but this show doesn't really introduce a direct plan, rather a slow method of preparing oneself until the hero goes berserk. None of it was particularly "fun" to watch, which made the flaws this anime had stand out even more to me.

For example, the end of episode 7.

Fucking embarrassing that scene was. I don't want to see literal children talk about giving blow jobs or whatever. Why is this being brought up in this otherwise serious story? Damn inappropriate.
Preteens shouldn't talk like this, especially a girl who was about to get sold as a sex slave just some time prior -a terrible fate her friends have already lived through. Why is she acting like a ho, while her job is to be Lugh's sister. Try to have some damn class, World's Fucked Up (Ass)assin!

After this, I kept on watching, though the pessimist in me was hoping the rest of the series would go downhill, so I could quit on it. This show already wasn't doing that great of a job entertaining me, after all.

So, episode 8, normal business, then episode 9 arrives and starts off with Lugh's mother wanting to see the erection he had back in episode 7, which that absolute miserable servant of his told her about. How is that allowed in a high-standing household? If you can't chuck that fool out because of her magic abilities, verbally destroy her, have her know her place. Untrustworthy wretch.
Making a fool out of your master is not funny and his mother should agree with this sentiment instead of showing up in her son's room to further embarrass him.

Speaking of wretches, the adopted sister apparently needed an entire scene to explain to Lugh that infidelity should be considered, because he's so wanted and nobility is more than welcome not to be monogamous. Disgusting, what a way to thank a person for literally saving your life.
After that, she dared to threaten him into considering her as a side-wife well. Jump in a ditch, clicked the episode off right away, enough of this.

If you've watched this show already, you might very well think I'm hammering on moments and dialogue that barely lasted a minute and it's not worth it, but I've grown tired of these kind of scenes in anime. Disappointment always hits me when random perversion is thrown at you in an otherwise normal, serious story. I don't fucking like harem animes, it's a deceitful genre that often shows its head in other genres. Like, you try to be invested in a story and the early relationships the main character develops, then suddenly, a bunch of horny bitches show up out of the woodwork trying to suck him off.

Go away! None of you are interesting characters! Leave, shoo!

Harem animes have developed over time, I've noticed. No longer are these swooning girls and boys each other's rival, now they're all friends and urge their love interest to give in to the concept of polyamorous relationships. Not because the love interest wants or suggested it, but because the horndogs chasing them are selfish and don't want to compete, too much work. That's not an erotic fantasy, that's a crowd of people trying to bullshit the person they supposedly love.

Where was I. Right. I'm giving this an "Average+", because I see the potential, but my interest was lost over admittedly trivial matters. I simply don't want my stories interrupted by this kind of idiocy, so I bailed. I'm really sorry.