inuyaki, green (pokemon), kris (pokemon), yellow (pokemon), nintendo, pokemon, pokemon adventures, pokemon heartgold and soulsilver, pokemon red/green/blue/yellow, bad id, bad pixiv id, 00s, 1990s (style), 3girls, alternate costume, alternate headwear, black hair, blonde hair, book, brown hair, hat, holding, holding book, long hair, multiple girls, open book, poke ball, retro artstyle, sitting, skirt, smile, thighhighs, unworn hat, unworn headwear, waist poke ball