Knight-Type Girlfriend

Yui is transported to another world. She wakes up in the Kingdom of Sameria, a country ruled by a barrier. Celica, an apprentice knight who knows Yui's situation, asks her to be the witness of the “Knight's Trial” to join the “Northernmost Order of Women Only”. Yui is unable to trust Eredia, the vice-commander, and Celica, who does not explain things well enough...