(Hey Hey Hey! Fukurou Daishuugou!! 2) [Grn-o (Mizui-ama)] Only Birthday (Haikyuu!!)
(ヘイヘイヘーイ!梟大集合!!2) [Grn-o (みづい甘)] Only Birthday (ハイキュー!!)
28 pages
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Story & Details
(Hey Hey Hey! Fukurou Daishuugou!! 2) [Grn-o (Mizui-ama)] Only Birthday (Haikyuu!!) is a doujinshi based on haikyuu featuring 28 illustrated pages.
This work is created by mizui-ama and was published on February 19, 2026.
