Youkai Power Limiter 【妖力制御装置 Youryoku Seigyo Souchi】 (Sai. Vol 1 - Continuous)
☆ Within Shangri-la, it’s possible for anyone to obtain a simple one over-the-counter. They come in many forms and styles. Usually some kind of jewelry or accessory that is in constant contact with one's skin like an earring or bracelet. The most common material used when making them is a metal base.
☆They suppress youkai powers and can change youkai forms and power levels so they appear no different from humans. Essentially they were created to match youkai powers to humans’ and make it easy to coexist, but now they don’t serve much purpose. Just the fact that these things exist is discrimination, Banri said.