Interwoven Destinies/Script

Opening
(The scene opens up with an inter-dimensional portal in front of Lianna and Rowan, ready to fight.) (Marth, Chrom, Ryoma, and Xander appear next to Rowan.) (Corrin, Lucina, Robin, and Caeda appear next to Lianna.)
 * Lianna: I won't let you defeat us! Your power is nothing compared to the bonds that connect us! Your madness ends here and now!
 * Rowan: Our friends--our world's counting on us! We won't let it be destroyed!
 * Rowan: Together...
 * Lianna: All of us...
 * Both: Shall win!

Battle Begins
(If Lianna is main character.) (If Rowan is main character.) (Marth becomes playable.) (Chrom becomes playable.) (Corrin becomes playable.) (As battle finishes.)
 * Lianna: My time has come... I can't give up now, not after coming so far.
 * Rowan: Let's get in there. To victory!
 * Marth: With everyone by my side, there is nothing to fear.
 * Chrom: Your power is nothing compared to the bonds we've forged!
 * Corrin: He's right! Let's finish this together. The path of peace awaits us!

(If Lianna is main character.) (If Rowan is main character.)
 * Lianna: That Chaos Dragon is about to meet his doom!
 * Rowan: I'll fight with all my heart. Chaos Dragon... I will defeat you!

After Battle
(Flashes of future cutscenes play.) (Scene ends.)
 * Rowan: No running away this time! Now, together, we can take on anything!
 * Lianna: Everything we've lost... We're going to take it all back!