Masato Inohara, originating from the *Little Busters!* series and appearing in the crossover *Kaginado*, is a founding member of the Little Busters group and Riki Naoe's roommate. He stands 183 cm tall with a muscular build weighing 80 kg, characterized by black spiky hair and a frequent red headband. His personality centers on an intense passion for bodybuilding and physical strength, often leading to humorous situations due to his single-minded focus. He is frequently depicted as lacking intellectual sharpness, earning nicknames like "the lovable simpleton" or "the lovable idiot." Despite this, he demonstrates exceptional loyalty and dependability within the Little Busters, particularly toward Riki, whom he openly expresses affection for. A recurring rivalry with fellow member Kengo Miyazawa often escalates into physical confrontations. Masato's background includes a history of childhood bullying that drove his obsession with strength. His loneliness ended when Kyousuke Natsume defeated him and invited him to join the Little Busters, providing him a sense of belonging. This experience underpins his deep commitment to the group. Within the artificial world of *Little Busters!*, Masato is aware of the repeating events and Kyousuke's plan to prepare Riki and Rin for real-world challenges. Though reluctant to subject them to hardship, he supports Kyousuke when necessary, such as during the pivotal baseball game against Kengo and Riki. His unwavering loyalty requires Kyousuke to use hallucinogenic measures to force Masato into antagonizing Riki and Rin during their first major trial in *Refrain*, as he would never willingly harm them. In the real-world timeline, Masato uses his body to shield Riki during a bus accident, saving Riki's life. In *Kaginado*, Masato appears in a chibi-fied style alongside characters from other Key franchises. His portrayal remains consistent: he engages in exaggerated comedic antics focused on his muscular physique and rivalry with Kengo, such as his clothes exploding during a soccer match minigame due to a vibration ability. His interactions serve as brief, lighthearted cameos without introducing new character development or backstory beyond his established *Little Busters!* traits.