Refier commands the Fredbarn Empire's guard as its captain, wielding significant responsibility and authority across the northern New Neverland Continent. His vehement opposition to the romantic bond between Princess Rosy and Erile, a young knight-in-training, thrusts him into prominence. Refier actively intervenes, convinced Erile lacks the requisite strength and experience for rulership and deeming him unworthy of potentially ascending to the throne through marriage.

This conviction drives Refier to confront Erile directly, demanding he sever ties with the princess for the kingdom's perceived good, citing Erile's weaknesses and inexperience as insurmountable barriers to royalty. Facing Refier's pressure, Erile abandons his post and departs the empire, seeking to prove his worth and forge a stronger purpose – a journey directly sparked by Refier's actions.

When an opposing army invades, Refier's doubts about Erile's readiness seem confirmed. Despite participating in the defense, Erile ultimately leaves the battlefield after Refier explicitly instructs him to depart. Erile's compliance reinforces Refier's initial judgment of his unsuitability for leadership in crisis, cementing Refier's role in challenging Erile's resolve and shaping his path toward potential growth.