– models who pose in swimsuits or lingerie for magazines ( Weekly Playboy ). They rarely sing; they sell "healing." Often former child stars.
No such age limit. Takuya Kimura (50+) still leads dramas. Male idols can date secretly (fans look away). Male bodies are not scrutinized except for "visual kei" (androgynous makeup) or "muscle idol" genres.
Must be virginal, young (debut at 13-16), and "graduate" (quit) by 25. Their bodies are policed: weight checks, "no visible ribs" but also "no fat." Costumes are schoolgirl outfits or maid costumes. Choreography includes crotch shots (but fans call it "accidental").
(推し) – your favorite member. Fans compete in "Oshi battles" during concerts (penlight colors, cheering calls).
Official clubs with membership fees ($50+/year). Only members can enter lotteries for concert tickets. No general public sales.