If you liked
Saiki Kusuo no Ψ-nan
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...then you might like
Aggressive Retsuko (ONA)
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Both are comedic flash animation shows, that focus on the protagonists' daily life, and how their troublesome interactions with others influence their lives. Saiki is a more "affectionate" high-school comedy, whereas Aggretsuko is a biting satire against the workaholism in Japanese culture.