Lloyd is the weakest boy of his village. He can’t fish, he can’t gather wood, and can’t beat any monster, unlike the rest of the village. Except, that village is near an end game dungeon and they are descendant of heroes.
Mitsuha Yamano has lost her family. Grieving, she failed her college entrance exam, and decided to take a break thanks to her inheritance. But during it, she was pushed off a cliff by a band of hoodlums. Instead of dying she found herself in another world thanks to a new power. Since the world is at medieval Europe development level, she decides to use her power to open a shop and earn her retirement money.
Luna Artur is an high school girl from the lineage of king Arthur of the legend. She is fighting to succeed the King against 10 other candidates, each with their own Excalibur and one knight of the Round table. But Luna sold her sword and her knight happen to be the weakest! Enter Rintarou Magami, a bored boy who wants to join her.
Ristia is a young True Blood vampire, who is also the strongest. Being the last child of her family, she has no younger sibling. And like every last child, she wants one, a little sister. But her parents doesn’t, so she goes back to her homemade labyrinth to seal herself through time until a little sister comes to free her. While she intended it to last a few decades, she was only freed after a millenium by Nanami, a human girl.
Ristarte is a young and beginner goddess ( a hundred years old ) whose task is to save worlds by summoning heroes. Blinded by his stats, she summoned Seiya Ryuuguuin to save the hardest world she has been in charge. And, the title is a very good synopsis.