At the beginning of the series, Koneko was the only member of the club who openly disliked Issei due to his perverted and lecherous nature, but she did admit that he was a hard worker and very determined. In Volume 5, Koneko started to develop feelings of love for him after Issei helped her overcome her fears of using Senjutsu after Issei told her that he was not afraid of her and would stop her if she ever went out of control, giving Koneko the courage to accept her true self.