Title: (C82) [Canvas (Yamachan)] Majo no Saga -Zenpen- (Puella Magi Madoka Magica)
JPN Title: (C82) [カンバス (やまちゃん)] 魔女の性-前編- (魔法少女まどか☆マギカ)
Madoka related tentacle doujinshi that was commissioned by cemex. Slight guro Madoka plot related guro warning.
Please support the artist if you can
Doujinshi DB
Toranoana
You can view it here
E-Hentai