The protagonist, Risa Koizumi is not your average Japanese high school student. Standing 172 centimetres (5 ft 8 in), Risa's height is well above that of most Japanese girls her age (the average height for a female is 160 cm (5 ft 3 in)) Ironically, her surname means 'little spring'. She and other characters compare her to a giraffe. Risa can be impulsive and strong-willed at times, and is rarely willing to display her softer side. She had a crush on Suzuki before he started dating Chiharu. In the beginning of the series, Risa is 170 cm (5 ft 7 in) but she gains 2 cm (0.79 in) in height to become 172 cm (5 ft 8 in). (Source: Wikipedia)

Chito is a thoughtful and introspective young girl who explores a post-apocalyptic world alongside her friend Yuuri in Girls' Last Tour. She is known for her analytical mind and reflective nature, often contemplating the remnants of the world they traverse. Chito is more cautious and pragmatic compared to Yuuri, and her practical approach helps them navigate their harsh environment. Her deep curiosity about the world and its history drives much of their exploration. She is also notably the last engineer in human history alongside Ishii. The strong friendship between Chito and Yuuri is a central element of their journey, highlighting themes of companionship, survival, and the search for meaning in a desolate world.