I Am A Wizard Who Can Travel Between Earth And The Other World - Chapter 23 - Portals of Power

On the wedding night, when the bride hung herself, the handsome husband was sickly, the concubine was glaring like a tiger to see what her best next move would be. Shu Huan who time-travelled to the ancient times encountered such a mess.

“Men and women can’t touch each other. You doing this is not right, right?”

“Humph, you are already married to me. You still care about that?”

“Eh eh, second young master, you haven’t healed yet. I’m thinking for your own good.”

“Doesn’t matter, this young master isn’t interested in your bean sprouts like body.”

While sleeping, they put a barrier of pillows between them

Woman: “Eh…Eh….”

Man: “Eh…what are you doing?

Woman: “Don’t cross the line.”

Man: “Ah……?”

Woman: “If you cross the line, I’ll hit you with the incense burner.”

Man “Uh……”

Woman: If……if I accidentally cross the line……you don’t…”

“Humph……if you continue to talk, I’ll tear your clothes and seal your mouth.”

“You check so carefully because you are afraid that I’ll harm you?”

“That isn’t it. Humph, I only want to know why someone will commit suicide by hanging on the wedding night.”

“……”

“You hate me so much? You prefer to die instead of spending the wedding night with me?

- Description from Novelupdates

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Eren Idril died as an old, decrepit, and piss-poor adventurer by the maws of a D-Rank monster. He had a lot of unfulfilled dreams and desires that couldn't see the light of the day after the light in his own eyes died down.

But fortunately for him and unfortunately for the world, that wasn't his end. Eren was somehow dived back in time when he was a mere teen, attending Lionheart Academy for adventurers.

When life gives him a second chance, Eren decides to exploit it to its fullest. Experience his vile deeds as he partakes in them without feeling the slightest bit of hesitation.

Being sucked into a fantasy world that nobody leaves doesn't sound half bad to Cain. He was a high school dropout with a drinking problem, living off disability due to his poor health, so it's not like he had much to lose except a few faithful friends he didn't talk to enough.

After a long night of drinking, Cain wakes up looking at what he believes to be the character creation screen of one of his beloved virtual reality games, but with no recollection of having purchased it. His unwitting choice to use the Random Character Creation option, unaware that the choice would be irreversible, sends him into this new world as a Puppet Master, a Summoning based class nobody else in the starting zone has ever heard of.

But as he soon realizes, this is no game, him and hundreds of others have been brought to another world with no instructions, no clear goals and no way home. It's a second chance to live a good life, but what will Cain be able to make of it?