Piisuke Kurosaki is a high school student and supporting character within Ponta Ninomiya's friend group. He actively participates in the group's Earth Deliberation Meetings alongside Ponta, Monyokichi Ootori, and Peruhiko Saijou. During these gatherings, the group discusses complex global issues but consistently misunderstands concepts and reaches illogical conclusions. They spun fictional tales about a character named Takahashi when discussing the TPP (Trans-Pacific Partnership) and proposed simplistic solutions for problems like deforestation, ozone layer depletion, and noise pollution, such as wearing earplugs on noses to block pollen while still hearing sound. Piisuke contributes to these misguided deliberations, introducing food-related tangents during global warming discussions and supporting impractical ideas like fundraising to buy birdseed to attract storks as a solution to declining birth rates.