shiragiku rin, shiraishi kana (aika), white knights, aika (series), aika zero, 00s, 1990s (style), 2girls, arm support, ass, bare back, bare shoulders, bottomless, breasts, brown eyes, eye contact, female focus, girl on top, green hair, hair ornament, happy, looking at another, lying, multiple girls, no panties, on back, open mouth, panties, pantyshot, pink hair, retro artstyle, school uniform, shirai egi, short hair, shy, sideboob, smile, topless female, twintails, underwear, yellow eyes, yuri