Sakurai Ayaka has always wanted to be like her older brother, a university student working hard to become a teacher. While an intelligent honor student, Ayaka tends to choke when taking exams, resulting in her going to a different high school than her brother. After becoming class president, her teacher, Ms. Egawa, asks Ayaka to get truant student Honda Sora to attend school in exchange for a glowing letter of recommendation to her university of choice. Determined to not fail an entrance exam because of nerves again, Ayaka agrees and visits Sora's house to convince her classmate to go to school.
Unfortunately, Sora becomes aware of the deal between Ayaka and Ms. Egawa and uses that as a means of getting Ayaka to fulfill her demands in return for going to school.
Can't Defy The Lonely Girl (Also known as I Can't Refuse Lonely Girl's Request or Lonely Girl ni Sakaraenai) was written and illustrated by Kashikaze and appears in the Comic Yuri Hime magazine.
The manga provides examples of:
- An Offer You Can't Refuse: Egawa ensnares Sakurai in a deal by promising to send a letter of recommendation for her in return for getting Honda to come to school.
- Class Representative: Sakurai is the president of her class.
- Delinquents: Honda, especially when she not only skips school but also skipped the entrance ceremony.
- Facial Markings: For whatever reason, two girl-participants of the three-legged costume race have spirals drawn on their cheeks. They inexplicably lose them when the race starts.
- Genki Girl:
- Honami is very energetic which goes along with her status as a social butterfly.
- Wakana Morinaga is shown to also be very hyper the moment she entered the classroom.
- Love at First Sight: Honda falls for Sakurai when she switched her strawberry milk with Sakurai's coffee milk.
- Master of the Mixed Message: Sakurai. While she promises to be Honda's friend, she still wants to kiss Honda and gets really into it. Honda is left confused about what their relationship even is.
- Meganekko: Sakurao's homeroom teacher Egawa.
- Official Couple: Sakurai comes to realize the feelings Honda had for her, and the two start dating.
- Secret-Keeper: Morinaga learns about Honda's crush on Sakurai, but promises her that she wouldn't tell.
- Shipper on Deck: Morinaga is incredibly eager to bring Sakurai and Honda as close as possible.
- Shout-Out: There is an obvious one to the Super Mario franchise during the three-legged costume race at the school sports festival.
- The Stoic: Honda typically is emotionless, but when she does smirk a few times when she gets Sakurai to do one of her requests.
- Troll: Egawa simply loves to jumpscare Sakurai by popping out of whatever unexpected place she hides in.
- What Is This Feeling?: After not being around Honda for five days, Sakurai felt bothered by it only to further question what she was to Honda when some of her friends began to speculate that there was something more to their interactions.
- Yuri Fan: Morinaga is really eager to bring Sakurai and Honda together as close as possible. At the end of chapter 10, Yuina Minami is also revealed to be one when she catches Morinaga spying on the protagonist duo in the infirmary. Together with Morinaga they form the "Secret Sora/Ayaka Fan Squad".
