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Do you have permission to use sakura animation ?
Have you read the release rules before making your release?

Credits & Copyright/DMCA

Sharing content that is not yours is allowed as long as you credit the original author and don’t violate their terms/license. Try to contact the author via their contact information found on their profile, leaving a comment/reply, or by creating an issue (if it’s a repository). After allowing the original author time to reply (~1 week) and you’ve not received a reply, you may use their content under the terms that you credit them and share your contact attempt (i.e. with a screenshot).