alexandrite (houseki no kuni), houseki no kuni, artist request, lowres, official art, 1other, ahoge, aqua background, aqua eyes, aqua hair, black jacket, black necktie, black shorts, book, book stack, chibi, chibi only, full body, gem uniform (houseki no kuni), holding, holding book, jacket, long hair, looking at viewer, necktie, open mouth, other focus, puffy short sleeves, puffy sleeves, short shorts, short sleeves, shorts