I would not use it. While I like the scenario of a story, this is conceptionally too far from making a link to the way that platelets rush to the site to form a blood clot. The clip also feels so primary/elementary instead of secondary.

It has all the right words but doesn’t teach the real thing even by analogy. Appealing that it’s anime though.

Not sure younger students would get the connection between the cartoon and blood system

I would use this as an engage/intro. Not enough information but a good question starter.