I have a bajillion versions of the IJN Kongo in the ARP color schemes. They were totally free (got them for playing the game like I usually do), and for a while, totally useless, except as, well, Kongos (I have the Myoko and Atago versions too), a ship that is only a Tier V anyhow although it’s pretty fun to play. Some patches ago, as Bismarck says, they changed it so you could use the captains in regular IJN ships, and vice versa, so suddenly I ended up with a bunch of ten-point (out of a max of 19 you can level to) captains. So, like, now one of my mid-tier Japanese destroyers is commanded by some kind of pink teddybear or something. I have zero interest in anime, but ten point captain is ten point captain, good for my second string ships I like to play long after leveling through them.
The High School Fleet stuff is even weirder than the Arpeggio stuff, though. It’s like that anime Girls und Panzer, where the schoolkids duked it out in WWII tanks. Here they duke it out in WWII ships or something. I have one HSF ship, the Harekaze, a damn good Tier 8 destroyer with a paint job that is pretty much just gray with a couple of red stripes (and an emblem that you can’t really see); there’s one more ship, a HSF version of the Graf Spee, a WWII German cruiser which I already have in proper Kriegsmarine livery. This latest event gives you the opportunity to pay twenty two bucks for each additional HSF captain and some paint jobs and other stuff, and opens up some in-game challenges with similar rewards. I passed, though I am doing the free collection thing where you get some other sort of crappy paint job or something. Because free.
But yeah, it’s a very weird vibe. Unlike WoT, where the tank people seem pretty hardcore, here there’s a huge anime following and the anime and wacky themed Halloween stuff and what not goes over pretty well I guess.