This ability only works with Rena and Makoto due to the fact they were originally the same person. It lasts 5 posts and has a 20 post cooldown before it can be used again due to the extremely powerful nature of the resulting being created by their reunion.
It melds together Rena and Makoto Lisola to reform their original self ( Aka the old Rena, minus the fact she's solely focused on battle and nothing else during the duration )
Renko (Only being named different to compensate for fairness in not ignoring Makoto's existence)
The power boost makes her quite possibly the strongest 1-1 tier in regards to physical might and spiritual power..this does not make her the fastest, the most durable, the most stealthy, Etc. Only her physical power and spiritual energy is extremely enhanced beyond the normal 1-1 standards.
The two must use the technique in total agreeance or it will not work. When the fusion ends both parties are left in the same state they were in before the fusion. They do not recover or retain any of the power boost.
by 
Subject: Fusion Technique 
