happyundergate, hozuki momiji, oyama mahiro, onii-chan wa oshimai!, adversarial noise, commentary, highres, 2girls, alternate costume, arms behind back, bike shorts, blue hair, blue pants, blush, brown eyes, brown hair, cowboy shot, dated, drawstring, eye contact, grey hair, grin, happy birthday, hood, hoodie, long hair, long sleeves, looking at another, matching outfits, multicolored hair, multiple girls, pants, pink background, pink hair, ponytail, red hoodie, short hair, short ponytail, simple background, smile, two-tone hair