Rating Patterns and Critical Reassessment in the Bleach Anime: A Multi-Method Analysis of the Thousand-Year Blood War Reception

Background: The Thousand-Year Blood War (TYBW) arc adaptation of Bleach (2022–present) achieved MyAnimeList scores exceeding 9.0, widely characterized as a triumphant revival. However, whether this reception reflects genuine quality or hype-influenced reception patterns remains unclear. Methods: We applied a multi-method approach — transformer-based sentiment analysis (RoBERTa), emotion detection, hype language analysis, and rating distribution analysis — to 899 MyAnimeList reviews spanning 2007–2026, supplemented by IMDb episode ratings, Google Trends data, and Wayback Machine score snapshots. Statistical tests included chi-square tests of homogeneity (with Cramér's V effect sizes), Mann-Whitney U tests, and bootstrap confidence intervals. Results: We found statistical anomalies in rating distributions consistent with hype-influenced reception followed by critical reassessment. TYBW Cour 1 exhibits a statistically anomalous rating distribution, with 50.3% perfect 10 scores versus 17.9% for the original series (χ2(9, N=740) = 89.67, p = 1.90 × 10−15, Cramér's V = 0.35). Subsequent Cour segments show a marked decline, with Cour 3 falling below the original-series baseline (mean rating 6.45 vs. 7.43). Joy correlates with higher ratings (r = 0.361, 95% CI [0.31, 0.41]), while disgust shows the strongest negative correlation (r = −0.405, 95% CI [−0.46, −0.35]). Cour 1 reviews contain significantly elevated hype language (Mann-Whitney U = 44,332, n1 = 169, n2 = 571, p = 0.0002, Cohen's d = 0.30), with twice as many positive hype markers as the original series. Review length negatively correlates with rating (r = −0.119, 95% CI [−0.19, −0.05]). Nine robustness checks provide converging evidence consistent with the hype-influence interpretation, including a within-platform divergence of 2.22 points between MAL's aggregate score and its written-review mean by Cour 3, and a detected structural break in November 2023 — during a content gap — where the mean rating fell from 8.61 to 6.65. Conclusions: TYBW's reception followed a trajectory consistent with a "hype and reassessment" pattern: initial elevated ratings compatible with fan enthusiasm, followed by critical recalibration. Nine robustness checks provide largely converging evidence consistent with the hype-influence interpretation. These findings position the study as a model for deconstructing revival narratives in online fan communities, with implications for researchers, critics, and platform designers concerned with rating authenticity.