haha, the graphics were pre-made by this one dude who does great asset packs on itch, let me know if u want the link.
I'm gonna flesh this out a bit more, and yeah that was my first thought, just make it hold LMB and release to retrieve, I think that'll be most natural, and then make it so you can throw a shuriken by pressing right click, with the jump-shuriken being a potential item you can get to toss all your shurikens out on hop.
Thanks for playing & giving good feedback, shitty that right click actually messes with the browser.. shouldn't be happening in an applet, what browser are you using?