Hiyoko Saionji

Hiyoko's cute appearance, voice, and (initially) her way of talking give off the impression she is innocent and childlike. However, in her introduction alone, it is revealed that she is very direct and cruel with a side of malice, liking to squish ants and enjoying the satisfying popping noise they make if done correctly and also trying to step on and trample crabs, laughing as if it were just child's play, showing an alarming fascination with it. She also stomps on and tear out flowers for her own amusement, explaining that she likes to destroy pretty things.

While not violent towards people (presumably due to her diminutive stature), Hiyoko often shows similar mean behavior towards them. She constantly judges others and patronizes them with rude insults, and sometimes with swearing, and she focuses on victims who get the most upset by her behavior and can be expected to not fight back.

Hiyoko feels a sense of superiority, claiming that other people exist to serve her and she doesn't need friends, tending to manipulate others to do her bidding. If she doesn't get what she wants or if other people actually talk back to her, she tends to cry crocodile tears loudly like a child. Though her tears are sometimes genuine, her dishonesty makes it difficult to discern when she is experiencing sincere distress and when she is being emotionally manipulative, in a "boy who cried wolf" effect. Being somewhat spoiled due to being an heiress of her Clan, she cannot do some things by herself.

Due to coming from a traditionalist family, Hiyoko loves Japanese traditions and culture very much and tends to act condescending or even openly insulting towards other cultures. She considers many Japanese things "delicate, refined and high quality". She is especially fond of Japanese cuisine and candies, claiming that foreign ones are too sugary and gross and the people eating them are gross as well. She has described some other countries as worthless and compared their people to stupid animals, thinking that Japan doesn't need to import from them.

Hiyoko acts very different towards people, especially females, who help her out with things she normally can't do, referring to them as "big sis" and acting very affectionate towards them, often happily wanting to hold their hand or hug them and even give them a kiss. She has stated that she likes them because they are normal and not weird like the other people she has met.

Hiyoko has been through a lot in her childhood due to her status as an heiress, explaining some of her mean personality. With her overbearing grandmother, and jealous people playing lots of cruel and even potentially life-threatening tricks and threats on her, she became very distrustful of other people and seemingly developed her mean personality to defend herself. The only person she trusted and felt safe with was her father, who was different due to being related to the family only through marriage. Due to her past, she absolutely hated being deceived, having directly told this herself to others.