When Fusu met Lin Weixu, who had vanquished his homeland, he looked disheveled and scared. Despite usually being lighthearted, Lin Weixu was taken aback by the merman's resemblance to her deceased mentor and opted to take him to her residence. Fusu would call her "My Lady" and have a request for hugs with a genuine innocence. It was unforeseeable that the previously weak and gentle merman would emerge as a formidable antagonist, wielding notable influence over the court.