Mirai Konno is a university student introduced in the later arcs of the anime. He is a childhood friend of Ume Kurumizawa. He is straightforward, observant, and blunt, often speaking his mind freely to Ume in a manner that contrasts with the more reserved communication styles of the main group from their high school years. He is kind-hearted and perceptive, frequently seeing through Ume's pretenses. His primary motivation is caring for Ume and navigating the long, complicated history between them. He cares for her deeply, yet their relationship carries the weight of past misunderstandings and unspoken feelings. Over time, he confronts and acts upon his own romantic feelings for her. Konno serves as a significant new figure within the university setting, acting as a catalyst for Ume's character development by pushing her to face her true self. He also interacts with Sawako Kuronuma and Shota Kazehaya as a friend and thoughtful observer of their dynamic. His most important relationship is with Ume, a central dynamic explored further in the spinoff Kimi ni Todoke: Soulmate but which is heavily featured in the main series university arc. He acts as a stabilizing yet challenging presence in her life. Konno's personal development sees him move from a guarded childhood acquaintance into a mature individual who actively seeks a more honest and vulnerable relationship with Ume. His defining trait is his emotional perceptiveness; he is exceptionally skilled at reading the true intentions and feelings of those around him, making him a grounded voice of reason within the group.