Summer Night is stage F-B in R-Type Final. This stage is a paradox after the events ocurred in Beautiful Erasure, jumping again to the first stage, but this time as a Bydo. The Boss here is the first ship piloted, the R-9A Arrowhead.
Destroying the R-9 and killing your human paradox would fix the story but you will end as a Bydo.
"Are the seabirds the only ones
happy to see me in this beautiful