Cute, funny, and accessible.
With cute, quirky character designs and funny voice acting (even in the dungeons, where monsters complain about you hitting them), this game is full of charm.
The bulk of the game is a dungeon crawler, in the vein of the Shiren series - and with the button layouts and systems being very similar, even with limited Japanese reading skills, it's quite possible to jump in and play.
The hardest part for a non-Japanese player is the plethora of magic spell scrolls and potions, all of which have names (and descriptions) written almost entirely in Kanji, and, as such, require you to experiment to learn what they do - which may occasionally result in you dying a terrible death.
Fortunately, the game is very forgiving - unlike most dungeon crawlers, which punish death by making you lose all your items, in this one you get to keep the weapon and shield you had equipped - which are the items you most want to keep!
Other unusual systems include Cu-chan (a tiny but powerful creature who follows you around the dungeon, and can be powered up by feeding him unwanted items), and the ability to cook curry in the dungeon by mixing various food items dropped by enemies. Different curry creates different effects, from status boosting to causing paralysis, and there are dozens of different recipes to find.
This game is a reboot of the classic Madou Monogatari series, the inspiration for Puyo Puyo. Since Compile no longer has the rights to those characters, the new game features instead a bunch of "all-new" characters ... who are suspiciously similar to Arle and friends!
Still, despite appearances, they are NOT simply clones playing the exact same roles, and the game's story seems to enjoy messing with players' expectations.
Oh, and it's worth noting that the music is very catchy, if extremely eclectic. Much of the game's BGM has vocals. There's a whole lot of highly amusing Engrish singing (Monster Rooms are particularly hilarious), and the boss music is just beautiful.
In short, the game is an enormously fun, not-too-hard, fast-paced dungeon crawler with cute characters, some unusual mechanics, and a very silly story (which is almost entirely voiced, so those who are better at listening to Japanese than reading it can still enjoy it.)
I bought a Vita entirely to play this game. No regrets.