Jikuu Mahou de Isekai to Chikyuu wo Ittarikitari - Chapter 347 - Rio

A man with a lifelong martial arts background, raised in Asia due to his family's profession, moves to the US for education and work. He discovers Historical Medieval Battles through a colleague and becomes deeply passionate about it. He trains hard and becomes skilled enough to represent his country.During a competition, his armor fails, and he's struck in the head with a two-handed axe, seemingly dying. But is this truly the end?

This novel is also known as The Demons Beside Me

Chen Zhao can summon demons and see Death.

“Beelzebub, use your Gluttony ability to treat this patient’s anorexia.”

“Raymond, this old man wants to regain his manly function. You know what I mean.”

- Description from Novelupdates

Chu Huai was parasitized by a ghost, he became weak and frail, soon afterward he died.

After entering the horror world, Chu Huai was harmoniously transformed into a man in women’s clothes.

On the first day of the instance. Everyone stares blankly at Young Lady Huai, who was holding the quilt calmly climbed onto the man’s bed: “I’m a little afraid of the dark and ghosts, can I sleep with you?”

Jin Tianyi: “…” I’ll pretend not to know that you are a man.

- Description from Novelupdates

After an unfair life and death, Qin Hua was miraculously gifted with a second chance. But she was a dog now? And the world suddenly changed?

Terrifying beasts roamed the streets instead of cars and trucks. Plants turned deadly. Rifts to other realms opened in random street corners and more importantly, humans gained unimaginable abilities!

Earth entered a new beginning where mana was abundant and one's monetary wealth no longer determined their fate!

With the strong surviving and the weak perishing, will Qin Hua kill or be killed in this new world?

This is a story of the earth's spiritual awakening and a dog's rise to power!