The Sword and Heir of Shadows - Chapter 16: Secret Chamber.

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Chen Mo transmigrates into the Battle Through the Heavens world and binds with the Goddess Favorability System.For every point of favorability he gains from a goddess, he receives a corresponding reward from the system.【Ding! Bound to the goddess—Die Ba!】【Ding! Favorability +1. Received a Tier 1 Pill: Accumulation Pill. Hand-holding bonus triggered—gained one incense stick’s worth of enlightenment time.】Looking at the woman before him, Chen Mo exclaimed in shock, “Isn't this Queen Medusa's younger sister?”

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

After everything that Zaroth had was stolen from him, he decided to live solely for his desires, morals be damned!Close to his death, he resurrects and tames a mythical dragon, who turns out to be a breathtaking woman.Learning that in order to explore her body, he must grow stronger so he doesn’t die during the act, Zaroth sets a clear goal for himself: to get stronger.“But I’m curious about something.”“Hm? What is it?” Luna asked, raising an eyebrow.“You said you judged me. How did you do that? Why was I worthy?”Luna’s smile darkened, her eyes glowing with a dangerous intensity.“Despite knowing you would die, you didn’t pray to the gods. On the contrary, you declared that you would kill every single one of them like the dogs they are. In my life, you’re the only one who’s ever made such a declaration, which is why I couldn’t leave you behind—someone who dares to share my dream.”