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https://yaharibento.wordpress.com/2018/11/19/oregairu-analysis-isshiki-iroha-who-mastermind-prom-cancel-yahari-ore-no-seishun-love-come-wa-machigatteiru/
Oregairu Analysis - I Can't Tell Isshiki Iroha (一色いろは) Who is The Mastermind Behind The Prom's Cancellation. [Yahari Ore no Seishun Love Come wa Machigatteiru.]