CMIIW, those protective charms works like silica gel. Instead of giving good luck, they absorb the bad luck instead. That's why it's a common thing to replace them every year when they have became too saturated.
Psh....Thank you...A good luck charm?I bought it from a shrine with a very good reputation.squishji~iinvery much!May... I ask you... to scrap me?With this, your bad luck will go flying away!The charm...Admiral....Wait, don't be so hasty!