The Influence of Amnesia Affects The Personality of Sento Kiryu in The Film of Kamen Rider Build

This research explores the linguistic identitiy shifts of Sento Kiryu, the protagonist of Kamen Rider Build (2017), focusing on the impact of amnesia on his speech and communication style. Using qualitative discourse analysis approach, the study examines how His pragmatic language evolves throughout the series, reflecting His identity crisis and eventual self-acceptance. The findings indicate that Sento’s amnesia results in a noticeable increase in politeness, indirectness, and cooperative speech behaviors, which contrasts sharply with His former self, Takumi Katsuragi, who exhibited a more assertive and impersonal communication style. This research contributes to the study of fictional character linguistics and identity formation, offering insights into how memory loss influences speech patterns and self-perception.