Caligula is what White Album 2 had looked like if it had followed its predecessor's footsteps and made its girls more obviously inanimate objects.
The story of this masterpiece of nothing is a weird one. Gay man who wears a rose instead of necktie gets stuck inside imaginary idol world where he is surrounded by sad people who all share the same music taste. When their favorite band starts playing, they go berserk and try to kill everyone. The best part is how dramatic this all is. Tables flip over in slow-motion like it's Game of Thrones killing Starks. Guy fails to solve some problem in class and everyone bullies him like failing in it is the single most embarrassing thing in existence. Girl experiences a mental breakdown at dinner when people glutton and have no table manners. Gotta wonder why everyone is so sad in this otherwise rose-colored world.
All our characters are the practically the worst and most empty version imaginable of Danganronpa 3's cast. The girls are so invisible in the series, I can't even tell them apart despite them having different hairstyles. Outside hyper active megane who someone with low standard could even argue to have a personality, and the little hand doll-sized flying loli, not a single one of them adds anything to the series. The dudes aren't much better. Everyone looks super gay, and the small bro gangs only radiate cringe. Even so, our dudes create the best moments in this series with so overdramatic, over the top facial expressions (which cover roughly 5% of the airing time) that it became the sole reason why I even bothered to finish this series.
In one way, this show is what Jojo's Bizarre Adventure would have looked like if it was made by Brainbase and every single thing about it was the polar opposite of what it is now. Perhaps this show had potential (it didn't), perhaps its source material game was better (it wasn't), but with certainty, I can say that 95% of this series is utter nonsense and there is not a single reason to care about anything that is going on.
The animation. I have but one factor to comment on. Walking. Whenever anyone walks, they don't really walk. They do look like they are walking, but they don't move forward. Moreover, the characters don't even have shadows so it looks like they are floating still in space while trying to walk. Fluid, and beyond hilarious. From the musical noise department, this show is just fantastic. Scenes where our dudeouses get scared and yell like 10 seconds straight, are comedic cold. Not even 4kids has achieved this level of believability, and we are talking about Japanese seiyuus here.
In terms of enjoyment, I laughed few times in situations where you clearly were not meant to laugh. Other than that, this show offered me nothing. The sole best part of Call Igula is how people are recommending it for the fans of Angel Beats due to their similarities and vice versa. By all means, if you are into that shit, watch this too.