Shinsha is a unique gem in the anime and manga series 'Houseki no Kuni' ('Land of the Lustrous'). Known for their mercury-based composition, Shinsha struggles with isolation due to their poisonous touch, which can harm fellow gems. Despite these challenges, Shinsha is intelligent, introspective, and deeply yearns for a purpose. Throughout the series, Shinsha's complex relationship with the protagonist, Phosphophyllite, and their quest for meaning play a significant role in the narrative's emotional depth.