

Sometime, she would mix up her delusion with reality, embarrassing herself when she realizes what she was thinking. Often, she would imagine him having a strong desire for her and making advances on her. Similar to Cecilia, Lingyin has shown to a lewd imagination when it comes to Ichika. In Season 2 Episode 5, she became enraged and jealous when she saw Ichika look at Charlotte's breasts, believing he was only focused on them (Charlotte's breasts). Strangely, she usually brings up this topic when she starts thinking about it or notice other girls' breasts. Her friends are aware of this and try not to talk about it, as she becomes threatening even when there's no ill intention. She can become easily enraged when her size is mocked or pointed out by others.

Lingyin is very sensitive when it comes her bust size. This was displayed when she was under World Purge, as her ideal version of Ichika expressed his feelings for her while trying to make physical advancements on her whenever he had the chance, which she was happy with despite saying otherwise. Despite being the same age as Ichika, Lingyin's too immature to give him a chance to bond with her, which also hinders her from getting closer to Ichika, despite them being childhood friends.

However the case may be, Lingyin highly expected Ichika to notice how she feels about him, but she keeps her true feelings a secret which only cases more troubles. Similar to Houki as she's also his childhood friend, Rin's cruelty towards Ichika hinders her from getting closer to him (meaner than Houki to be precise). Rin crashed into the classroom and was immediately about to shoot Ichika with her Shenlong's Ryuhow without giving him time to deploy his own IS or even listening him. This trait is also seen at the end of episode 8, when Charlotte revealed that she is a girl. She can become extremely jealous when there are other girls around Ichika who are trying to get his attention, to the point of showing the stereotypical lifeless eyes of a "yandere" girlfriend (this trait is shared with Cecilia in episode 9 and at the end of episode 12). She can also act very aggressively and harsh when is provoked enough. Like Houki, she has a tendency to be self-righteous of her actions. She rarely acknowledges her actions as her fault (which they always are) but instead's blames everyone else (mainly Ichika). This often causes headaches for her superiors in China because of the trouble she usually causes as an IS Representative Candidate. Lingyin is very impulsive and irresponsible, as she always acts without thinking about her action or the problems with them, which is made worse by the fact that she has a personal IS. When he asks what she means, she just says that it means she will give him free meals, hoping he would not understand the meaning, which is technically a lie. When she meets Ichika again at IS Academy she becomes disappointed and extremely hostile to him because he had forgotten the details of the promise. Because of this, she developed romantic feelings for him and made him promise that if she became an excellent cook, he would become her boyfriend. when he protected her from four school bullies). However, Ichika helped protect her from these situations (e.g. In her middle school year, Rin was usually the target of pranks due to her nationality. when Houki said that she has eaten and slept with Ichika when they were kids, she said that he has been coming over to her place to do the same when they were in grade school, though Ichika is quick to clarify by saying he ate at the restaurant her family owns). She effectively answers them while hinting that she has an advantage over them (e.g. This is seen when Houki and Cecilia were arguing with Lingyin about her relationship with Ichika. Rin is depicted as a very energetic and lively girl with a slight competitive streak. For her IS practices and battles, she wears a pink version of the training uniform. Rin's IS Academy uniform is slightly modified as the sleeves are detached and expose he shoulders. She has green eyes and her fangs could often be visible. She has light brown hair tied into long twin tails, with a yellow ribbon at both sides. 5.5 Episode 7: "Blue Days ~ Red Switch".5.4 Episode 6: "My Roommate is a Young, Blonde Nobleman".5.2 Episode 4: "Showdown! The Class League Match".5.1 Episode 3: "The Transfer Student is my Second Childhood Friend".
