It turns out that my Yandere playmate online is my Homeroom Teacher - Chapter 4: This is how the strongest duo play

Bai Ran had been married to Chen Chen for three years—three years in a secret marriage, only to have him hand her a divorce agreement. He asked her to sign it because he wanted to give his ultimate unattainable lover, Hu Wan, a beautiful ending. Chen Chen said, "Go and see Hu Wan tomorrow. If she asks you, tell her that you already have a boyfriend." Bai Ran said, "Okay." Chen Chen said, "You have to do everything it takes to convince her and make her happy." Bai Ran answered, "Okay." Staring at Bai Ranran's calm face, Chen Chen felt an inexplicable sense of frustration and uneasiness. Seeing the lack of hesitation on Bai Ran's face as she signed the divorce agreement, Chen Chen regretted it. To Bai Ran, ever since she signed the divorce agreement, Chen Chen's name had been erased from her memory. Even though she had loved him for more than ten years, once she gave up, she would never look back.

In a world where summoners wield the power to call forth vampires, elves, angels, demons, and all humanoid creatures from across the realms, Nathan found himself unable to summon beings except from beasts. However, those beasts are not ordinary beasts. They are divine beings who once stood at the same level, if not higher, than the legendary creatures the world ever knew. Casting his gaze to the left, Nathan sees numerous summoners accompanied by the likes of demon kings, archangels, vampire progenitors, and other legendary beings. Turning to the right, a massive army of alien symbiotes is waiting to attack. There was no fear in his eyes, because standing on his left is a majestic wolf who managed to kill a god, the legendary eight-headed serpent coils on his right, above him is the bird who is glowing like the sun, and behind him is a dragon that once gnawed the roots of the world tree. “Let the war begin.”

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?

The MC (Minato) is a college student who died in a plane crash and was reincarnated in a fantasy world. He was raised alone in the wilderness by his succubus mother, and now he tries to make his way as an adventurer.