There are two different versions, one with Shiori and Megumi printed on the disc, the other with Yumi and Nozomi, details unknown, may be that the replacement service provided by Waei in next February uses the different disk printing.
This original version has a bug will make your computer crash after the ending, you need download a patch from Waei's official website to fix it.
Patch download here: [url=https://drive.google.com/file/d/10fq_glMZ2OdDsNdvkACm0HIzFhld1-71]Google Driver[/url]