Ready for Exile! Isn't Two People's Love Eternal?

One of the creatures named Gravos, has the double headed Sword of Light looking weapon. He uses it against Lina and the gang, breaking the island in several pieces, seperating Sera and Marco from them. Filia, Zelgadis and Amelia go after the kids, while Lina and Gourry fight Gravos. Filia, Zelgadis and Amelia catch up with the kids, and Marco starts hating Sera. They refuse to help each other, so Amelia and Zelgadis step up to use the magical vessels, which we find out it was weapons from the anicent times, representing Holy and Dark powers. Gravos starts to lose control of the weapon, and Lina decides to do a Dragon Slave to stop it. Then suddenly, it went away, thanks to Zelgadis and Amelia, but it's too late for Lina, and she casts her Dragon Slave. In the end a bridge shows up connecting the two kindgoms, and Sera and Marco truly hate each other. Lina is surprise to see that the magical vessels are broken, thanks to Zelgadis and Amelia when hitting together to hard...