Astolfo is from a 2017 anime TV series called "Fate/Apocrypha" (however, there is also a manga of it).
More information about the series can be found in the following links:
https://www.imdb.com/title/tt6424454/?ref_=tt_ch
https://en.wikipedia.org/wiki/Fate/Apocrypha
https://myanimelist.net/anime/34662/Fate_Apocrypha
https://typemoon.fandom.com/wiki/Fate/Apocrypha
https://typemoon.fandom.com/wiki/Astolfo
Apparently, it can be watched on Netflix ( https://www.netflix.com/title/80180849 ), though I am sure that it can be found on other sites, too.
Hope that helps!（*＾-＾*）
Caption this Meme
