i just absolutely needed to rant about this because it FILLS ME WITH RAGE so I have a muji eraser. if you've ever bought any stationary from muji you know that stuff is B E A U T I F U L 10/10 I love it. so I have not used this eraser for very long, and only one edge/corner/side was used (it's a block shape). the other corner was perfectly intact and untouched as it should be. i lend this eraser to someone else because he needs it. i SPECIFICASLLY ASK HIM TO ONLY USE THE SIDE I WORE DOWN. guess how it comes back. DESTROYED. MAULED. EVISCERATED. i don't know HOW but he somehow wore down an incredible amount of material just getting marks off of music. worst of all? the sharp corner is gone. A FLAT TRIANGLE. WHY WHY WHY WHY. i nEed to have one corner perfectly untouched and it literally hurts to see it gone. guys. please only use the worn down side when you borrow someone's eraser and don't touch the sharp side. also my mechanical lead pencil got lost after I lent it to someone. both of these things were gifts. PLEASEEEE MY STATIONARY IT HURTS LIKE SOMEONE RIPPED MY HEART OUT.