Ok, here's the bit of the bomb explanation from Our Confessions
I had but didn't translate earlier. It's not very long, but I decided to release it now since there's not really a reason not to as it's unrelated to the epilogue.
The epilogue will be done soon. Maybe a day, maybe a week.
Just a reminder: This is when Beatrice had taken Krauss and Natsuhi down to the VIP room at gunpoint to show them the gold and had just claimed that she had control of the bomb device.
I find the whole thing where Genji just kind of magically appears there because it's convenient for the author pretty amusing.