First. The cover advertises Wato Kokoro as 18 years old. But I highly doubt Wato Kokoro is 18 years old. Since she debuted in 2015.
My best guess, is that she is 20, or even more. But, if someone knows her age let me know on the comments section.
Secondly, this girl is a bit more nerdy than what i usually like. But she looks very very good in this AV. Slim and pretty. The cosplay was really super good and interesting, and i liked this JAV release all around.