Start in dungeon.
Climb spiral staircase to the Woods.
Find the Hotel entrance.
In the Hotel there is an elevator.
There have been updates to how this last part works and I can't be fucked to verify specific details of how the elevator sequence goes but basically ride it a few times and complete the challenges you face there.
The final time you use the elevator you'll reach the Nintendolls sisters that placed you in the simulation in the intro.
Defeat them and press the button to escape the simulation and get an ending based on the value of jewelry you have and your stat/body changes accumulated.
how to improve my stats on my character.
Strength is the most straightforward: engage in exercise (combat, for example) and
do not sleep in beds (except at the school).
Your other stats can be boosted with certain foods from the vending machine or clothing you find in the world but the most reliable way is class headgear.
When you obtain a headgear it will give you certain tasks as a requirement before you can remove it. If you keep it on after that and continue doing what the gear wants then it will provide you some bonus, usually related to the class that it is.
I want to build magic characters but I'm not sure how to build up more magic points and get wands besides the one you can spawn if you play a D&D character.
Your best bet is to obtain the Magical Girl headgear. Enable "Tentacle monsters everywhere" in character creation then keep killing them while not wearing other headgear. You will be gifted a magic wand that way.
methods for winning combat early in the game
Heels improve kick damage. Garter belts improve knees. Slaps are weak but safe if enemies attempt to trip you. Repeatedly using the same attack reduces the damage they deal. Ofc seek out easy opponents like wenches or latex dolls when you're first starting out. And pay attention to your surroundings so you don't get outnumbered.
Oh, and don't forget to dump some points into starting stats in character creation. If you find you're not doing enough damage to begin with, consider what compromises you're willing to make to end up with a few extra points in strength.