I’ve used MobiPay a fair bit. It’s a payment system popular on Japanese platforms like BookWalker or Amazon Japan, where you can prepay credits into your account and then use them to purchase e-books or light novels. The process is straightforward: you top up your MobiPay balance via credit card, convenience store payment, or other local methods, and then the credits are deducted when you buy.
One thing I love is how seamless it makes international purchases, especially for titles not available in your region. Some platforms even offer exclusive discounts or bonus content if you use MobiPay. The downside? Exchange rates can be a pain if you’re topping up in yen, and not all stores accept it outside Japan. Still, for hardcore light novel fans, it’s a lifesaver for accessing untranslated works early.