Despite Suzune's slightly violent demeanor, she cares greatly for Hayate. She is very disappointed in her son Shun, for loading such a large debt on Hayate's shoulders. She only wishes for Hayate to be happy and goes to great lengths for him to be so.
It is revealed that Suzune is actually Hayate's grandmother. Suzune returns to Hayate as a spirit that Hayate sees while on vacation with his friends. Suzune recreates an amusement park that Hayate once visited as a child with her. Suzune believed that Nagi was causing Hayate to suffer because of her spoiled attitude and that he only stayed with her because of the debt. Suzune gives Hayate a diamond that would pay off the debt so he could live his own life. Despite this Hayate returns the diamond to her and says that he wants to pay off the debt on his own. Suzune then departs to the afterlife with a smile.