Okay so after playing this I can say if someone sat for a couple hours sifting through some broken/nonsensical parts of the translation this game is perfectly playable but I only just managed to beat the first boss but ESL's may struggle despite, sadly the clothing & some menu aspects are untranslated & it really breaks the flow because of how important clothing is.
Speaking of the clothing system, I'm unsure what conditions are required but body/mental off clothes is a permanent boost to hp/sp, you can change classes after earning certain pieces of clothing & some useable/passive permanent skills once capped out however I don't understand the conditions to unlock any of these skills.
occasionally you'll get a "gift" of sorts out of a battle - alot of it is mundane like full hp/sp restore, double drop rate on items, more stockpile (the money in game) and whopping stockpile rewards I got two gifts rewarding me overall with a whopping 81 stockpile once I got more of this to buy healing items it became easier.
The game states you'll have a VERY hard time doing it solo, took me a while to figure out how to get a party member, if you talk to the dude just before leaving the village the deputy mayor I believe he can assign you a hero, you can only beat the first boss if you get one of these guys, it's not possible to win otherwise.
Stockpile/money is important as you get it from killing monsters and it slowly drains by 1-4 I think per day.
lastly the clothing system once more; You can talk to a cat near the bathhouse to get a unique dialogue, it turns out that cat is actually a fairy. You can take it back to your house & give it any extra clothing items you acquire & get the stats from that piece of extra clothing 100% free which means you can get a stat boost twice I think. That's all I really now atm hope it helps.