apparently you can download Crunchyroll on the EShop : r/wiiu
Crunchyroll - Crunchyroll is Now Available on Wii U
HC4E - Crunchyroll
Crunchyroll - Crunchyroll App Now Available on Nintendo Wii
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HC4E - Crunchyroll
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Crunchyroll Wii U app can now be used by free members
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Crunchyroll, YouTube, and Niconico apps to shut down on Wii U this year
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Crunchyroll Wii U screenshots
Crunchyroll - Crunchyroll is Now Available on Wii U
Crunchyroll - Crunchyroll is Now Available on Wii U
Crunchyroll Wii U App Can Now Be Used Without A Subscription | Nintendo Life
Crunchyroll - Crunchyroll is Now Available on Nintendo Switch!
Crunchyroll - It's been a long time coming, but now for all you Wii owners out there ~ you can now enjoy the Premium Crunchyroll experience on your Nintendo Wii ~ !!
Crunchyroll reveals what anime Wii U, Wii owners watched most in 2016 | The GoNintendo Archives | GoNintendo
Crunchyroll App Now Available On Wii U In Europe - My Nintendo News