Age: 17-18

Birthday: May 5

Height: 165cm

Yotsuba Nakano is the fourth sister of the Nakano Quintuplets. She has a bright and cheerful personality. Yotsuba is the only sister who accepts Fuutarou from the start and wholeheartedly supports him in everything.

Yotsuba is an active, cheerful and calm girl. She speaks in a loud, spontaneous and sometimes absent-minded manner. She is the type of person who can't say no to people who need help, and is mostly seen helping people, either directly or indirectly.

While cheerful on the outside and towards others, Yotsuba also harbors feelings of inferiority towards her sisters and her own abilities. Her inferiority complex began to grow when she met Fuutarou when they were children, and surprised him by talking to his sister all the time by realizing that he didn't know it wasn't her. She had made several attempts to fix her complex, which in turn made her desire to be different from her sisters stronger. While she was portrayed as a bad liar early on, she is later shown to have some knack for lying to herself; being able to hide his true identity from Fuutarou all the time and being able to maintain their relationship, at least when they are together.

Yotsuba is good at sports, the basketball club even asked her to join the team. Yotsuba's excellent sporting ability is shown, scoring in 7.9 seconds for a 50m sprint. Yotsuba is praised as a skilled player by a member of the basketball club. She also has excellent stamina and is a good runner.

Yotsuba is the only known sister with excellent eyesight (Itsuki wears glasses and Nino wears contact lenses). Yotsuba got a part-time job doing cleaning-related jobs. Yotsuba is good at festival games. Yotsuba's excellent eyesight is shown again, when she is able to recognize the name tag on Nino's uniform from the second floor. Miku will notice if Yotsuba is lying to her, because according to Fuutarou, Yotsuba is bad at lying. Yotsuba's poor academic skills are first hinted at and shown when she gets a zero for a test. Yotsuba comments that she is the one most likely to repeat a year. Yotsuba's excellent eyesight and kind demeanor are first shown when Fuutarou drops his exam sheet and she returns it to him.

(Source: Gotoubun no Hanayome Wiki)