Elf Training Master

The secret realm is coming, the elves are coming out, the day of nuclear destruction is coming, and the world is full of crises. The secret realm is home to brutal elves, and human civilization can be destroyed at any time. In this real world, only trainers can overcome all difficulties on their own. The secret realm is accompanied by dangers, and dangers and opportunities coexist. An outstanding young man walked out of the secret realm of Warsaw. He... Is a time traveler... He... Changed his major and became a student of elf subjects. He... Joined the reserve members of the city defense team to protect the peace of the city. He... Planned to become the strongest trainer on the planet. Even in deep darkness, even the light of fireflies must be held tightly...