You've Got Mail: A Cautionary Tale - Chapter 5 - Adviser Wu’s Wet Dream (NSFW)

The 51st year of Konoha was designated by later generations as “the beginning of reform in the ninja world” and “the first year of Vientiane renewal”.

Orochimaru made an indelible contribution to this.

Because he was haunted by a lamp god.

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After being guided by a traveler who became a lamp god, watch how Orochimaru harvests leeks from the ninja world and walks the road to eternal life.

- Description from novelbuddy

Doomsday Online has descended, reducing the entire Earth to a ruined playground. It is occupied by countless terrifying monsters.

Arthur got randomly transported to another world. Some people would find that terrifying, but not for him, who was tired of his old life; it was an opportunity.

And, after having bad luck all his life, the tide changed.

It was a world of magic where wizards fought side-by-side with their familiars. Arthur got summoned to be one of these so-called familiars.

He was furious. The thought of becoming a pet was not something he liked. Well, that changed when he saw who his master was.

A hot-woman. And, to make everything better, Arthur was inside the Frostpeak Magic Academy, which only had women students.

“This is heaven. All familiars are beasts, but I'm different. I'm a good-looking man inside a place filled with hot girls.”

When he thought his luck could not get better, he unlocked a system that helped him with everything. Of course, he used the system for a greater good, like getting girls.