Puniru is rendered as a chibi slime figure placed on a clear, stylized slime base. The body features a soft translucent finish with a gentle pastel gradient blending lavender, pink, and mint, giving the impression of a living jelly. Large round eyes, a tiny mouth, and blushing cheeks give Puniru a cute, friendly expression. The limbs are short and plush, with a curious pose that makes the character feel ready to wiggle. Subtle surface texture mimics slime, while glossy highlights simulate wet shine. The Luminasta design may include delicate iridescent accents that catch light from different angles, enhancing the toy like shimmer.

Puniru wa Kawaii Slime follows a tiny, cheerful creature who travels with friends across dreamlike slime worlds. Puniru's curiosity leads the group to discover hidden glimmering springs, friendly spirits, and pockets of mischief that teach kindness. Despite being small, Puniru exudes brave heart and a big sense of wonder, always seeking new colors and textures to collect for a scrapbook of memories. The character loves to brighten the day of anyone who feels down, leaving a faint spark wherever Puniru goes. This figure captures that playful spirit, inviting fans to imagine adventures where slime and friendship blend into art.