Nephren is a quiet Leprechaun, who almost never shows her emotions. Despite this, she cares a lot about her friends, and tries to support them as best as she can, especially Willem. Nephren cares a lot for Willem because she thinks he is the same as her. While she was having a conversation with Nygglatho, she described her feeling for Willem as: "I don’t want him to break down. So I’ll try my best to stay by his side and support him." (Source: SukaSuka Wiki)