My strat to break this game:
If you're just starting the game: Don't put any points into DEF, it's useless. Put around 30-40 points(around 15 levels) into AGL, which will make you strike 3 times in each attack for 70% of time. Buy only the double-swords in which will raise your AGL, raising your 3 strikes frequency to more than 90% until the endgame. After that place all the subsequent points in LUK. Don't put in ATK because it's a stat that will increase naturally as you get new weapons. LUK is never increased naturally so it takes priority. With high LUK you'll get criticals all the time. Be sure to get High Sensitivity[A], but most importantly, get Sensuality[A]. Sensuality increases your damage the lower HP you have.
The first level will be hard, so if you need DEF just grab an accessory but by the second level you'll be thrashing any enemy or boss. I defeated the final boss in 1 or 2 turns. If my HP gets just 25 points in damage, each of my strikes deals around 1,300, meaning around 4,000 per turn. Grab that accessory that has a 25% of inflicting paralysis with each strike and you're pretty much invincible.
Don't forget to use Cheat Engine with Speedhack if you think grinding is taking too long.
There's another way of breaking this game, which only requires 3 Skills:
- Erotic Swing
- Continuous Climax [A]
- Fast Climax[A]
By having those you can continuously use Erotic Swing and be invulnerable for the rest of the fight after you orgasm the first time.
Continuous Climax[A] gives you 3 turn of invulnerability while Fast Climax[A] makes you regain control with no turn penalty, that means you can immediately use Erotic Swing again, then one turn will be used for the monsters to attack you(but it won't damage you) and the next turn will be open for you use another Erotic Swing thus cumming again and looping infinitely...