When a liquid in a coffee mug hits rather hard, can be almost anything including: Coffee, Bourbon/Whiskey, Chocolate Milk, Water, etc. Freshly made coffee is the most common spicy slice, but once again it can be nearly any liquid as long as it goes hard..
An utter dogshit Crunchyroll original "anime".
The creators of this "anime" strive to have diversity in their team, but somehow have a 100% female writers room.
The graphics in this "anime" look like the stuff on Cartoon Network rather than a REAL Japanese anime.
It is so bad that it is not even listed on MyAnimeList.
Every REAL anime watcher thinks that High Guardian Spice sucks.