Reason

Eloria had no memory of General Roule in her past life. Was he among the ones who betrayed her father or those who got executed due to their loyalty? She had no idea and this used to bother her even when she trained with him in the past. After all, the young man was skilled enough to become one of the top Generals of the Army. However, after reading his request to be transferred to the southern border just two days ago, she started to realize why she had no memory of him.

Maybe General Roule did the same thing in their past life. Maybe he got transferred to the southern border and eventually died before that incident.