User blog comment:Dragonjet/KC3改/@comment-26800230-20150821234854/@comment-1820055-20150824033250

if you want multiple kancolle-gameplay instances in one computer, you can create multiple Chrome Profiles, it will act as a new browser in itself with its own set of bookmarks, history, extensions, etc. So you will need to have kc3kai installed on both/all profiles, and each one can be opened separately