A character in Go-toubun no Hanayome. The fifth and youngest of the Nakano Quintuplet sisters. Itsuki has a two-faced personality; she's always friendly with acquaintances and classmates but when around Uesugi Fuutarou she goes into an attack mode due to his past insults. She loves to eat food and studies seriously, even though her methods need improvement. Her best subject is science.
