Looking for some news of the project, I saw this message I missed.
If it's still useful, here's the translation :
"Bat, answer to Lyn's love and live on together!"
(It's a dialog line displayed during the ending scene of the game).
There is also a "graphical text" at the end of the game, after the staff credits.
It would translate to something like : "Farewell, my rival..." (literally, "強敵" means "strong enemy").