Over the last few months I've finished a couple more Vita crawlers.
Aoki Tsubasa no Chevalier which is Japanese only and a port of Entaku no Seito/Students of Round, is a prequel to Stranger of Sword City. It's an absolutely fantastic game, despite the language barrier and it's such a shame it will never get a western release.
The story starts with heroes facing the last boss, only to get annihilated. Fast forward a hundred years and the hero has been reborn. He then sets out on a quest to finish the job properly.
If you played any other Experience Inc games, then the systems used will make it playable despite the lack of English, as long as you can understand basic katakana.
Once you reach a certain point, you can assign a sub class to gain new skills. These can be changed at any point and keep their levels.
The story was about 40 hours long, but the post game and grinding for the secret weapons took my play time to nearly 100 hours.
Also finished Mary Skelter Nightmares last night after about 45hours. I honestly have no idea how this commands the prices it does. It seemingly shot up from about £20 to £50+ overnight. Plenty of class change options, but the difficulty is non existant up until the last chapter. I actually finished the game without any class changes and just got through it by spamming one move on mobs and using brute force on bosses. Really disappointed with this one and if you were thinking of picking it up, go digital as it's better value at £8.99 on PSN.
Just need to finish the post game dungeon for the platinum and move on to the next crawler.