damn... sword: go further and klick on the two plants at the end. There is the sword.
pants: in the cafeteria next to/behind the tennant.
and for the third guy, you must go in a fight outside of the school.
Another quest asks for arrows. Never seen them.
Until version 0.4, i thought, what a cool game. Now, i want to go to the stripclub and make some money... nope...
Or get some hints by changing coursors during movement over items (sword or underwear)... nope.
I think, i will wait until there is a walkthrough or an actualized wikia online.