i found a nice combo of panties that was really good and could probably be improved upon, Naughty Maid (higher lvls of "P" upgrades when upgraded, increases amount of bullets and spread when paired with Sailer Uniform), Sailor Uniform (for scatter shot), Rosy Lace (for penetration, bullets hit more than 1 enemy, not that penetration that you're thinking of), Striped panties (for increased fire rate) and the skill that breaks everything, Belt Thong (for invincibility skill) with enough upgrades for the panties you will be able to hit everything thus charging your skill really fast and allowing you to spam and stack your invincibility skill which then leads to you not getting hurt and hit everything on the screen without care and pretty much ignore everything that would damage you for the whole duration of the level.
For the majority of the game, my build was similar to yours, but I went with the
Striped Panties Frilly Panties for the explosive buff that would make clearing waves a bit easier. Though by the time I got past the "Staff List" level (aka the credits) and fought the last three girls, my endgame build was looking more like this:
- the Rosy Lace Panties for their penetrating bullet feature, more damage with fewer shots to make;
- the Butterfly Panties for their ability to home in on enemies, clearing waves without even moving sometimes;
- the Frilly Panties for the explosive bonus, which ends up having a huge radius by MAX level; and
- depending on what I need, either the Duck Panties to murder hordes in early stages even faster, or the Chastity Belt during boss battles for the "added experience" bonus (which means more currency after beating a stage, up to around 300% the norm at MAX).
As far as skill-granting panties go, I tried the Belt Thong for a while, but it really wasn't for me; the concentrated power of the laser granted by the
Strap-On Dildo was more my speed, since it meant I could focus my fire specifically on clothing articles that I wanted to damage, without having to worry about spamming highly-damaging bullets and killing enemies prematurely, allowing me to farm them for their full potential.
Since the third stage of Ennoi's route (
Ennoi being the sixth and final girl) spawns waves and waves of minions in addition to the boss, using the above combination with the Chastity Belt to get a massive high score. I simply used the laser special to destroy her clothing as quickly as possible, waited a while for the minions to spawn, and took it slow and steady. As a result of that, I was able to get over 4000 experience points with which to level up some of the other panties in my collection, even if I never use them. (
It did cost a couple of lives, though.)
EDIT: If you've already beaten the game, and you just plan to farm experience points, the best combination of panties is unequivocally the
Strap-On Dildo, the
Modesty Leaves (
passively charge special meter over time) and the
Shell Panties (
the description is a bit confusing; it actually reduces the amount of charge required to gain one skill use). The Shell Panties are one of the last sets you get in the game—I believe it's the reward for beating Ennoi's third stage, but with them, your first skill charge will be made available within about
three seconds of starting the level. And if you have a fully maxed Strap-On, the beam lasts approximately
eight seconds per use, meaning that you'll effectively have infinite lasers throughout the level at the expense of not being able to fire your normal bullets (
a worthy compromise, given the laser does about 20 damage per tick). But the payoff is worth it, given that I redid Moutan's first and second stages, and got a score of around 10000 and 12500 respectively.
From there, it's just a matter of using other panties that complement that combination... a few suggestions of mine would be the
Chastity Belt, since it at most triples the experience you get based on your score, which will skyrocket with this build; the
Chain Panties passively increase your health, increasing the number of hits you take from three to about eight at max level; and the
Booty Shorts increase your movement speed a little bit, barely enough to be noticeable but still helpful for letting you hit as many mobs as possible.