Ruka Urushibara

Ruka Urushibara is a Japanese student raised in a traditional household. He is a male character with black hair, brown eyes, and fair skin, who struggles with gender identity and self-acceptance. Shy, gentle, kind-hearted, and introverted, he enjoys playing the koto and practicing martial arts but dislikes loud environments. He experiences the consequences of time travel experiments and provides emotional support to the main characters. Notably, he once saved a classmate from a severe illness using traditional medicine.