These are keychains from the stage production of "Remember Me" (Houkai Series). Top Left: Haruna Kamiji Top Right (3): Kohei Matsushita Bottom Left (2): Zen Kajihara Bottom Right: Mao Ayabuki These are keychains of the characters they played. ★ Individual sales are available for around 500 yen each, and bulk sales are also possible. Please consult via comments.