Isekai World - Detreon Part 1

You have a strange dream but you go to class there you meet your friends and they talk about their things, everyone is in their places but the teacher has not arrived, you hear a strange voice, it seems that everyone in the classroom hears it, it is a strange language, suddenly a light appears on the floor next to a magic circle, while everything turns white you begin to understand the voice, it seems to be an invocation ritual.

All my classmates and I appear in a palace, in front there is a king, King Francis V. Summarizing what he said: there is a demon king who will appear in 3 years, only heroes from another world can defeat him, we were the chosen ones, 12 students from a high school, they give us legendary weapons made by the first heroes, the demon king is called kyler and he is dangerous, they train us and on a mission the ground splits and I fall into the void with a friend, he falls at the entrance of a cave and grabs me with his wizard staff but it breaks and I continue falling, I fall into a slime, a giant wolf woke up and attacks me but I fall into a strange room where there is an altar, when activating it releases a smoke that leaves me unconscious, that black smoke with red is a demuniek called darek, meanwhile two friends come down to rescue us but one is devoured by the wolf and the other escapes, although another smoke surrounds him, it is another demumiek called Krito, I wake up and walk through corridors until I reach a blue portal that It takes me to a beach, behind there is a forest and I go inside, I find a dwarf and he tells me that he has already seen my partner and that further ahead there is a village, I get to the village but it is destroyed, I only see a girl lying down and I pick her up, she has white hair, after walking a lot I get to a wall, it is the entrance to a kingdom called augarius and I was summoned in the kingdom Kariel, which is at the other end of the continent, the portal took me so far, I get an inn and treat the girl's wounds, while I sleep I wake up and see her, she has become a big woman. She mentions that she wants to stay with me as an adventure partner and her name is Alice Hellia

Leo Handa
Alex Yapret
Melanie Flores
Juan Astafuri
Rose Wallenstain
Emily Allard
Alexa Valen
Erick Bernard
Sarah Garza
Luna Lara
Carlos Zoretti
Alice Hellia

His father disappeared years ago and his mother is working abroad, he only lives with his sister Lana Firezel, he goes to high school. His best friends are Alex Yapret, Leo Handa, Melany Flores, in that order.