How many series have the MC banished from someone else's harem

[Oobaka-san]

Clumsy title, I know. Idea is basic: the main character is recently banished from a party which aside from him consists of one "hero" and two or more girls who form a harem for said hero. I know of two "banished" series off the top of my head like this, as well as one other series that doesn't fit the "banished" genre.
Keikenchi Chochiku: the MC is banished from the Hero's party due to his level never rising above 20, with the excuse being that with his low level he could die at any time and none of the party members want to see their childhood friend die, while the rings on the girls' fingers, including his former fiance's, make it clear that the real reason is because he's just in the way of the guy's "fun" with his harem. By the third chapter it's revealed that the Hero actually had a brainwashing ability that he'd used to make those girls fall in love with him and out of love with the main character.
Hikyoushada: The main character was dragged into the "hero party" and fought on their side for two years. If I remember right he tends to be exceedingly pragmatic in combat, to the point that people started calling him a coward, and even though he helped his comrades grow stronger they claim that they too are being mocked by association, so they want him to leave. The way the two girls in the party keep fawning over the Hero makes it clear that they also want to be alone together. It's a particularly harsh story, with his three comrades cutting him down, taking his equipment and leaving him for dead the moment he turns his back to leave. It's also somewhat harsh in the results, as unlike most series where the party members suffer and eventually break up or die long down the line, this story jumps forward two years and reveals that each of the former party members has lost everything. They lost to the demon king, then the Hero was revealed to have tons of lovers besides the two party members so they left him, and one ended up a slave to the demon king's army while the other was stuck in prison for a long time while the Hero wandered and tried to make his way as an adventurer. When the MC easily defeated the next appointed "Hero", all three were identified as acquaintances and sent to garner favor with him while he just worked to teach his students.

There's also a story where the main character isn't banished, but he's still something of an outsider as the party consists of him, the summoned "Hero", and all his childhood friends who adore said Hero and eagerly seek to "service" him whenever they can. Like Keikenchi above, this is revealed to be due to mind control.

So, what I'm mainly looking for is stories where the main character is an extra wheel (can't exactly say third wheel when there's already several) in what is otherwise a harem. Mainly I'm looking for Banished stories, just to see how many there are and how they go, but I also welcome any stories where the guy is allowed to stay in the party but is still treated as inferior or unnecessary or simply kept out of the loop.

 

[Oobaka-san]

Just stumbled on a somewhat interesting series.

Spoiler

The story starts pretty standard, with the "hero" being an ok guy (compared to most of these sorts of stories) but a womanizer. He and the MC and the three girls in their party were all childhood friends, but after they started partying together and gained titles the "Hero" Zect seduced the three girls, finishing with Mel, the girl who was "dating" main character Ceres (really they were just close and he was supportive, he wasn't romantically interested in her or any of the girls). Zect one day kicks Ceres out to turn the party into a harem, and the other girls agree, partly to get him out of the way and partly because they feared he was weaker and could get killed. Ceres doesn't fight it, though he is a little hurt that even Mel agreed, while wearing a necklace given by Zect in place of the one Ceres gave her; he didn't have those feelings for her, but it was clear that they had that sort of idea and still did this. He then ends up buying Zect's mother, who Zect's dad had sold into slavery, and before long ends up married to all his friends' mothers (and when said mothers insist on some kind of punishment sets up their fathers with slave brides that are the same age and identical to their daughters).

That series has not only the setup of a guy partying in what amounts to a harem until he's banished, it also has a case where the girls kind of started out as the main guy's harem, got stolen by the "hero" and ultimately end up "taken back" (despite him not being that interested since they're the same age as him and he's more into MILFs).

It's also got another rarity: a story where the Hero, despite doing something pretty awful, isn't actually completely irredeemable, exploitative, or stubborn. Whereas most such stories end up with the "Hero" dying or getting arrested and stripped of all his authority, this one actually winds up with him recognizing that he's a failure and feeling legitimately guilty for the lives lost from his mistakes, parting ways amicably, and starting over with real humility and awe for the great guy who refused to stop liking scum like him all the way to the end.