Don't be a human in your next life

Reincarnation as a werewolf
This one contains almost everything I'd possibly want
Magic, demons & demon lords, politics, adventure, a super levelheaded character, and a beautifully slow burn romance, not to mention op mc *.*
I find no reason NOT to love this.
& If you wanna know what happens next, you can check out the light novel too. The main story has ended there

Highschool girl dies in a mysterious incident & gets reincarnated to a spider monster in the world's most dangerous labyrinth & the first thing she sees? Her siblings eating eachother! Guess what's next? Their mom eating them!
So the poor kid tries to survive in this hell she calls home
Highly recommended
& Go for LNs too

It's irrelevant to the main story, but kinda funny nonetheless lol

Summoned to another world
So you might think she's still human right? You'd be technically right but not really. She's more monstrous than many villains I've read about :)
A first year college student is now the queen of arachnea, an evil group of spider (?) Shaped monsters who want her to lead them to 'victory'
Ahem. It's really interesting & all, but if you don't like violence you should probably leave this manga be.

Boy gets killed by a demon he summoned & gets dragged to hell as a new demon.
Seriously guys, by normal yaoi standards, it's LEGENDARY
But by normal isekai standards? Also LEGENDARY
I see no reason why one wouldn't fall in love with this (assuming you're ok with violence, rape, creepy things & a demon-eating highschool boy lol)
I also highly recommend reading the author's other books

Reincarnation to a virus. You've heard me correctly
There's sadly too few chapters, about less than 20, but it really manages to be amazing. A scientist reincarnated to a virus wants to bring a pandemic to another world :)

Does coming from another star to annihilate every human on the face of the planet count as isekai? I hope it does'case I'm putting this on the list anyway~ ╮(＾▽＾)╭
Oh but don't let the 'annihilation of mankind' fool you, because it's the fluffiest, cutest, loveliest, most adorable little manga I have EVER read. Like damn people, our scary general goes to zoo on his days off to pass the time >//////<
Damn it I want to keep him as a pet. I wannaaaaaaa.

Reincarnated as... why look at me? Look at the title
So she was looking for fruits in the forest, but she found a hot person who looked weirdly familiar. Turned out he's the prince of the country in a game she played 3 years ago.
The mc is so beautiful & funny & adorable I can't even- now I've got a crow wifu AND WHOSE FAULT DO YOU THINK IT IS?!!
ML is nice too. So adorable it's just... AAAHHHH
*Chef kiss*
Sadly only a few chapters are out
But totally recommended

Don't give up on fucking the hot military commender just 'cause you're a wild horse now!
(No, no. They haven't fucked when he's in horse form... Yet)

Well, it shouldn't be here, technically
I mean a normal highschool girl really just gets transported to another world, but... Well you know, she's the only human there. Everyone else is a demon & actually maybe mc is the demon who's with her? Idk
It's not god tier, true, but oh well time spent reading this isn't really time wasted. So here we are
(Definitely not me wishing they'd eat that damned human & get this over with)