finish it... about 45 minute or less, 5 stage 5 boss, final one have a second form, took me no single game over actually. the game really not hard at all (or maybe because i lived in megaman era) compare to any platforming H-game like Eroico and several other i've played. the stage design pretty decent honestly, nothing out of balance. the animation quite good, up for my kink. although it's kinda bit buggy when i set fullscreen myself like the gold counter is gone, boss HP bar is gone.
every time you beat a stage there will be a new girl in the village that will offer you something to make you stronger. a (goblin?) girl sell you extra heart for 100G make your live become 4 but no more than 4, the elf... well i don't know, i don't find any booster or such, she just service you like the village girl. the witch will boost your slash for unreasonable price, if you can't pay it she will have you pay with body, just let it be, you just loss one heart and there you got upgrade for free.
friendly reminder: better take every single gold you can find through your gameplay, eliminate any enemy, destroy every barrel. the gold doesn't just used for the NPC in town but the GALLERY too, yes you need to buy the gallery for all the enemy, 50 for mob, 100 for bosses so better find enough gold so you won't return to the stages too many time just to farm