I never heard about Kakushin, so i dont know the fundamental of the project. But for Pundi x and zilliqa, both project already successfuly. The price of Pundi x was growing more than 10 times just a few month and this project has working product. And for Zillliqa also already going up to 5 times. Pundi X want to make crypto more acces able for all people in the world, and Zilliqa want to solve scalability issue in crypto space.
hi, go here to know more about kakushin project
https://www.kakushin.tech and here is the announcements thread
https://bitcointalk.org/index.php?topic=2620476for me Zilliiqa is better if we compared with the others, i know Pundi-X have a real product
regards