Characters: Mysterious Girlfriend X
Voiced by: Ayano Yoshitani (Japanese), Genevieve Simmons (English)The main female protagonist. A really weird girl who enjoys cutting things up with her "panty scissors".
- Aggressive Submissive
- Beautiful All Along
- Clingy Jealous Girl
- Cloud Cuckoo Lander
- Covert Pervert
- Defrosting Ice Queen
- Double Standard: Abuse, Female on Male
- Hates Being Touched
- Heterosexual Life-Partners: With Oka.
- Hidden Buxom
- Ms. Fanservice: Together with Oka are the biggest suppliers of fanservice.
- Polar Opposite Twins: Unrelated example with Momoka.
- Shear Menace
- The Stoic
- Sugar and Ice Personality
- Tsurime Eyes
- When She Smiles
- Beta Couple: With Ueno.
- Cloud Cuckoo Lander : Shes as much of a mystery as Urabe
- A Friend in Need : Hangs around Urabe even when she wasn't "officially" her friend
- Heterosexual Life-Partners: With Urabe.
- Ms. Fanservice: Together with Urabe are the biggest suppliers of fanservice.
- Beta Couple: With Oka.
Voiced by: Misato Fukuen (Japanese), Carli Mosier (English)Tsubaki's elder sister.
- Promotion to Parent: She considers it her duty to raise her brother properly in place of their deceased mother.
- Manipulative Bitch: After her own failings in love, she tries to steal Tsubaki for herself.
- Psycho Ex-Girlfriend: Psycho Ex-Crush.
Momoka ImaiPopular idol who is nearly identical to Urabe.
- A-Cup Angst: The biggest physical difference between her and Urabe.
- Identical Stranger: With Urabe to the point that you can consider them as "twins".
- Mistaken Identity: As Urabe by Tsubaki.
- Polar Opposite Twins: Unrelated example with Urabe.
- Twin Switch: With Urabe during her concert and later in the promotion of Urabe's school movie.
Voiced by: Ayumi Fujimura (Japanese)Tsubaki and Urabe's beautiful classmate.
- Hopeless Suitor: She develops feelings for Tsubaki.
- Love Confession: She confesses to Tsubaki that she would not mind to be "second one" for him if he wants.
- Secret Relationship: She offers this to Tsubaki as an option in front of Urabe.
- Tareme Eyes