Li Tou (female, 16 years old, named after time travel: Toru Hayama) has traveled through time. She has not traveled to a different world, nor to ancient times, nor to a high-risk anime.
But she traveled back in time to the "Pokemon" that she had stopped watching since she was 12 years old. Yes, it was the legendary "Pokemon" with a danger level of 0.
She doesn't have a super-powerful king-level family, but she does have a humanoid weapon sister who is obsessed with girls.
She doesn't have the elf of the mythical beast, but she has a second-hand system.
Regarding this time travel, she said: "Oh my god, are you kidding me?!"
Picture of the heroine: http://p2. So. Qhimg. Com/bdr/_240_/t01f71be7b5dc0394e2. Jpg