TV-Series
Description
Ranko Kanzaki is a 14-year-old from Kumamoto with gray hair styled in twin ponytails ending in curls, blood-red eyes, and a height of 156 cm. Her measurements are 81-57-80 cm. She exclusively wears Gothic Lolita fashion, featuring dark purple, white, and black elements with lace or ruffles, often carrying a lace umbrella.

Ranko embodies "chuunibyou" (eighth-grader syndrome), adopting the persona of Brunhilde, a half-angel, half-demon princess commanding darkness. She communicates in archaic, mythological language called "Ranko-go," using phrases like "Drown in the darkness!" for "good work" and "Curse you, day-moon" for "good morning." While this confuses most, individuals like the Producer, Mio Honda, Miria Akagi, and Koume Shirasaka understand her. Despite her dramatic facade, Ranko is inherently shy, easily flustered, and battles low self-esteem. She uses her chuunibyou identity to mask social anxiety, yet paradoxically fears horror elements like ghosts or horror movies despite her gothic affinity.

Her hobbies include drawing, and she uses sketchbooks as private diaries for chuunibyou concepts and personal thoughts. She becomes intensely embarrassed if others see these sketches, especially those revealing feelings for the Producer. Her favorite food is hamburg steak, which she terms her "forbidden fruit." Ranko performs solo as Rosenburg Engel and collaborates in units: Dark Illuminate and Fortuna Regina with Asuka Ninomiya and Chitose Kurosaki, and Ao no Gakudan ~Azul Música~ with Rin Shibuya, Riina Tada, Kaede Takagaki, and Minami Nitta. She shares a dorm with Anastasia, Koume Shirasaka, and Syoko Hoshi.

Her development focuses on reconciling her true self with her Brunhilde persona. Initially seeking to erase her ordinary identity, the Producer emphasized her genuine personality’s importance. Gradually, she accepted both aspects, growing more confident while retaining her chuunibyou expressions. This evolution shows in later interactions, where she openly thanks the Producer and commits to becoming a top idol without abandoning her fantastical persona.