I Got Isekai’d, Well Shyt!

A 27-year-old American named Ryan was doing his usual morning run through a forest in the United States Midwest when he was attacked by a magical orb that transported him to another world. While in this other World, he finds himself captured by a tribe of Dark Elves that summoned him and another human. This other guy that was captured with Ryan, is a Japanese teen who goes by the name Hiro.
Unfortunately for Ryan, Hiro is a delusional edgy otaku who believes he's the Main Character and thinks he can get away with anything.
This just adds more of an obstacle for Ryan to overcome. And he's worried about what the Dark Elves are planning to do with them as they force them to kill monsters. Causing their bodies to absorb mana.
At some point the Dark Elves get attacked by a holy group known as the Divine Three, who are trying to rid the world of all subspecies, try to murder him. Ryan barely escaped with his life only for him to get chased by goblins into a Labyrinth. And worst of all, the mana from all the humans and monsters he had slayed has been affecting his body in weird ways as he begins to transform into a Dark (Female?!?) Elf with the extremely rare ability to heal anything.

Volume 2:

After surviving the events in the Tomb of the Horde. Rya (Ryan) and her new friends (Quinus, Dalia, Percy, and Sir George) make it to the old Dwarven City of Ironside. There she gets a rude awakening about how much people fear Dark Elves. And worst of all, she can't fight her attraction towards Crown Prince Quinus. She needed to prove that she was still a man, at heart and went, by herself, to a brothel. After failing to achieve what she was hoping for a Mercenary group who goes by the name "Black Roses" collared her with a rare and powerful slave collar. They plan to use her Earth Magic to kill the Dwarves and take over the city.
Lucky Quinus finds out that Rya was captured and raises an army with Baron Zellin Coldforge to free Rya and stop the Mercenary group who are in league with his Uncle.

Volume 0 (technically it was my third volume but it's a prequel):

A 30-year-old German, Emil, was rock climbing with a friend in Greece. A storm came out of nowhere and he repelled off the end of his rope and everything went black. He found that the afterlife was dark, boring, and surprisingly cramped. After months of being trapped in this place, he started to believe he was in hell. Until he painfully squeezed out of his new mother. Now reborn as the only heir to the throne of Fiafyr. Prince Quinus must learn to adjust to this new fantasy world he's been born into. While his uncle (Duke Alaric Revelia) tries to plot his death so his son can be the only heir. He hires an assassin (Wina Daz) to infiltrate the palace as a wet nurse. But the fates decided to throw in a curve ball when the elixir that Wina ordered from an Alchemist (that was designed to make her lactate) wasn't fully complete. And since she was up against the clock, she took it away. Causing not only making her slender body become voluptuous but also healing her womanhood. That was mutilated as part of her assassin's training. She finds herself falling for one of the strongest knights in all of Fiafyr and starts to grow a conscience. Can she complete her mission or will she be hunted by the Assassin's Society for betraying her client?