Best of the two worlds?

"So you are the head of one of the fifteen local human tribes, Ha…" Robin rubbed his chin as he half-sitting in front of the kneeling sage and the grieved mouse, then continued, "A technique for transforming Soul Energy into an extremely thin thread and connecting it to the Soul Domain of another weaker creature, thus Seize his body until the connection ends. So researching soul techniques has already brought you to a method to actually touch upon the Soul Domain? Amazing…"

The fat Rat didn't know what to say and just rubbed his red cheek while looking at Robin with watery eyes