You've probably read it but i'll say it anyways
Transfer Student Storm Bringer

the obvious TWGOK forced to work for hell Eyeshield 21 force to play
Kandachime though he isn't forced into it, became the kandachime wielder
Yakuza Girl .... hard to explain...
[koe de oshigoto].. an avarage girl force to be an eroge dubber..
Oto x Maho forced by his mom to be a magic girl

Well there's Sentou Jousai Masurawo and like someone mentioned The World God Only Knows. You read Kyou Kara Hitman but I don't know if you read [m]Katekyo Hitman Reborn[/m] since he is forced to be a mafia.

I think Beezlebub is a manga, but if you want you can watch the anime... he's being forced to be a demon lord's father. I don't know anything else like you described because i only remember the manga & anime i only recently watched. But theres a good website you can try... you can specify the genres etc.

Website: www.mangahere.com

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i like the red paint that comes out when i stab you...

Here are some suggestions for you

Kiseijuu forced to be half alien
Battle Royale every one here is forced to be or do something.
Togari evil main forced to do good.
Go Tenba Cheerleaders Guy forced to be a cheerleader
Popcorn Avatar forced into a war between blah blah ......

Also maybe Shikabane Hime situation forces main into the world of zombies


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Tripeace

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“All the kids have always known,
that the emperor wears no clothes,
but to bow down to him anyway,
is better than to be alone.â€

-Arcade Fire

birdy the mighty II
maybe even rosario to vampire.you can argue whether he's forced or not...

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