Ms. Shirakawa in Neverland

Shirakawa Aoi, a first-year high school girl, is so beautiful that she is treated like a flower out of reach, when in reality she is a "magical girl otaku." But she has no one to talk to about her hobby... until she discovers that Tateishi Jun, a member of the Archery Club and nicknamed the "Handsome Mask" for his stoic expression, is also a "Sentai Hero otaku." They become friends who share a secret common interest...?!

(Source: Rimacomi Plus, translated)