Through reading digging the history of khaenri'ah I suddenly discovered the door to Khaenri’ah, it is located under tuningi hollow, I got so curious about the new secret that I have discovered, I went on a journey to find this door, I took a long vacation from the knights of favonius, and decided to go a long journey

Kaeya: I wish I can go with you

Jean: I will be fine.