If you have no spark, then without getting to technical I would just retrace my steps, checking all loom connections, especially at the ECU.
I would also be looking a bit closer at the Crank Position Sensor and connector and whilst there check out the Cam Postion Sensors connections as well.
Also check all common and related fuses to Ignition + the fuse links at the battery.
Finally just thinking standing on my feet, I would also be having a look at the JDM immobiliser.
Good luck.