This is a "WHITE-DAY" theme custom PC and case mod made by Toru Mod.
In Japan, we have a custom of men who got chocolates from women on St. Valentine’s Day give something in return to those women on March 14th and it’s called “White Day".
As a return for the Valentine’s day gift, chocolate, french macaron, candies are popular...
and WHITE-DAY theme color is light blue. also turquoise blue.
Video
https://youtu.be/hVt3RuZ9-js