I'm sick and tired of main male characters, famously in ecchi, have an assertive or willing girl with them but are too weak to make a move or prefers to keep things slow. Rito from To Love Ru is a MASSIVE example. So I'm on the hunt for NON-ONESHOT manga where the main male character is finally cheated on or dumped after the main female character gets tired or depressed with his indecisive gutless ass. 3g4k52

A bonus is if she never goes back to the gutless male in the end. Ultimately, I want to see characters with attitudes like Rito and others getting cheated on and knowing about it. Please tell me they exist.

And before it gets started, No what I'm looking for isn't "hentai". Series like Domestic Kanojo(which barely has what I am looking for), Fuuka, Toukyou Dted, Nisekoi Doumei, Scum's Wish, Kimi no Iru Machi, Netsuzou Trap - NTR(GREAT example of weak man cheated on), etc? All of these and many more are non-hentai NTR manga with non-explicit sex/implied sex or some form of NTR/cheating. For me, my focus more on guys who outright deserved it for being cowardly and gutless.

Come-on, anybody?!

Go see a doctor, you sick fuck!

Quote from Akemi Mokoto

And before it gets started, No what I'm looking for isn't "hentai". Series like Domestic Kanojo(which barely has what I am looking for), Fuuka, Toukyou Dted, Nisekoi Doumei, Scum's Wish, Kimi no Iru Machi, Netsuzou Trap - NTR(GREAT example of weak man cheated on), etc? All of ...

I have only read Kimi no Iru Machi of the ones you listed, and although it's been a long time since, I don't recall any NTR in it:

IIRC the main girl just didn't reciprocate MC's feelings up until the end, and in the meantime he went out with another girl for whom he didn't feel anything. I think she kinda dumps him at some point, but he never liked her. Heck, I disliking every single character in this manga

I'm a bit confused about what qualifies as what you're searching for in this manga. Maybe that could help find other works with that theme.

My current top 3:
3-gatsu no Lion

In Freesia the protagonist eventually loses his girlfriend due to his ive personality, but it's quite the psychological thriller.

Quote from train93

I have only read Kimi no Iru Machi of the ones you listed, and although it's been a long time since, I don't recall any NTR in it:

IIRC the main girl just didn't reciprocate MC's feelings up until the end, and in the meantime he went out with another girl for whom he didn't fe ...

Let's take the worst harem MC of any harem or ecchi anime and manga ever made so far, Rito from To Love Ru. He should be a tower of strength but he is a pillar of jelly around girls, including and especially the girl he likes and those that are CLEARLY interested in him. What I'd like to see is those girls gradually lose interest in him or get hit on by another character and start to like that other character. Then I'd like to see Rito either get his shit together, trade his panties with boxers and act like he has a penis...or him have a mental breakdown and regret his spinelessness. I don't expect that in To Love Ru but that should give you an idea of what type of manga I'm looking for. Preferably with out a sketchy/realistic character design.

It's hard to find any NTR that's not just hentai, for example White Album 2, which is a good example for non-hentai NTR is not even tagged as NTR.

So I'd recommend to search under the combination unrequited love, love triangle and male lead tags, add cheating if

I believe that you won't find many series with the tone of Nisekoi, who would deal with that. You could find series similar to the others you mentioned, but the focus would be less on the guy and more on the cheating or in the prohibited relationship in between the characters, and it's generally shown as a terrible thing, and it's hard to break the male mc mentally and proceed to tell the story without lowering the tone and focusing on drama. For example, there's stories like "Daddy became a mommy" who has infidelity, the wife left the husband because he wasn't "mainly enough", but it focus more on the life of the husband and their daughter.
I believe that you would have a easier time just searching for stories with wild or assertive male mcs, since you don't like ive mc's, you could also enter the world of smut and see the narratives that unfold there. I don't like NTR and most stories in the genre, but there are many NTR stories in the world of smut, and some of them deserve credit, like Netoraserare
It's also pretty hard to something like that to happen in harem or similar genres, because they usually are comedy series and the mc being ive is shown a being a quite charming trait, and it allows him to not only outstep his boundaries, but also to not end or turn the story into something more dramatic or lewd

Hikaru ga Chikyuu ni Itakoro...... ?

pretty much deceased spineless mc (hikaru mikado) harem getting ntr with the true chad mc (koremitsu akagi)

try the lightnovel too, consisting 10 heroine which part of the mc harem

not ntr because the mc is literally already dead