Overflow

Kazushi Sudou is an easygoing university student whose quiet routine is upended when two childhood friends, sisters Ayane and Kotone Shirakawa, come to visit. Tension starts over small slights: Ayane is angry that Kazushi forgot her pudding and used her special lotion. To teach him a lesson she decides to share his bath, and Kotone joins in. The situation turns into awkward comedy as the three trade teasing, embarrassment, and flirtatious behavior, testing how far Kazushi will resist temptation while the sisters push boundaries with playful schemes. The show keeps things light, leaning on blush-worthy moments and situational humor instead of darker turns or dramatic consequences.

Created by Eeyo Kurosaki and Kaizuka, Overflow premiered in 2020 as a short-form animated series, featuring Mitsu Anzu as Kotone, Tomoe Tamiyasu as Ayane, and Sada Naohiro as Kazushi. The voice cast carries most of the show, and the production emphasizes expressive character animation and quick gags.

Overflow did not receive major industry awards or mainstream nominations. Public recognition has stayed modest, with no record of film festival prizes or prominent television honors tied to the series.

While it never reached broad mainstream fame, Overflow found a niche audience online thanks to its risqué premise and short episodes that are easy to share. Clips and GIFs of awkward bath scenes circulated on social platforms, and discussions often center on how fanservice is used for comedy rather than drama, drawing attention from viewers who follow short anime and adult-oriented humor.

Critics and viewers gave Overflow mixed to positive feedback, reflected in a 7.4/10 average from a small number of votes. Reviewers tend to point out its reliance on sexual comedy and awkward romantic tension, plus the chemistry among the three leads. Themes include boundary testing, nostalgia for childhood ties, and the comedic side of attraction, so it appeals mainly to fans of ecchi-leaning slice-of-life shorts.