Sekai Saikyou no Assassin, isekai kizoku ni tensei suru

Eng: The World’s Best Assassin, Reincarnated in a Different World as an Aristocrat

The eldest son of the assassin aristocrat Towerhades.
The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.
Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

MangaDex | KissManga | MyAnimeList

Gate – Jietai Kare no Chi nite Kaku Tatakeri

Eng: Gate – Thus the JSDF Fought There

A gate appears in Tokyo’s Ginza district sometime in the 21st century. From the gate pours out monsters, knights from middle-age Europe, and other fantasy-like beings, and they kill many of the citizens of Tokyo. This event is known as the Ginza Incident. The government sends a small group of soldiers from the Japanese Self-Defense Forces to the alternate world beyond the gate. Led by otaku soldier Yōji, they find that the villages in the world are being attacked by a dragon. An elf girl who is a survivor from the dragon’s rampage joins the group in their travels across the dangerous new world.

MangaDex | KissManga | MyAnimeList

Gunota ga Mahou Sekai ni Tensei Shitara, Gendai Heiki de Guntai Harem o Tsukucchaimashita!?

Eng: When a Gun Nerd Is Reincarnated to a World of Magic, He Established a Harem army with Modern Weapons!?

Hotta Youta is killed while returning home from work on a cold evening. He wakes up being carried by a bunny-eared woman! Featuring Reincarnation, Guns and Harem, its a Gun vs Magic Story that gives Hotta Youta a new life… and an edge!

MangaDex | KissManga | MyAnimeList