The Himemiko Connection: Guardian Training

Takemoto Reika, a forensic chemist who finished work on the night of Chistmas Eve, received a necklace from a Police Sergeant. Worn out by work, she wore the necklace to bed. Only to wake up in the void between all realms where she met Himemiko, a character from an deceased otome game. Where Himemiko asked her help to be the guardian of two young ladies who are main characters of ambitious, collaborative mobile game projects.

Disclaimer:
Sengoku Night Blood (SNB or Senbura for short) is a mobile otome game collaboration between Otomate, Kadokawa, and Marvelous. While Twisted Wonderland is a mobile otome game collaboration between Disney Japan, Aniplex and Square Enix. I own neither of these games and I made this because of the games' similarities. Takemoto Reika is my self-insert Original Character.

There will also be a slight crossover with Wizard101 and NinjaSaga at the beginning chapters.

Story is also posted on AO3