Hello, regarding the viewing status of Yu Sin, the novel has been taken down from all major app stores and browser, so it cannot be viewed on the app. However, if you are reading the electronic version of the novel, you can search for it on some reading applications. In addition, if you want to wait for the novel to update online, you can also use some reading platforms such as Dumpling Creation. However, please note that the novel update speed may be slow and you need to wait patiently.