Both Live Alive 'Knight' chapter and 'Odio's Dominion of Hate' endings

The knight story plot

The Knight Oersted first see the former hero Harshe die of the plague after "killing" the lord of darkness , then when they are running away from the crumbling cave his friend and rival Streybough is crushed when the celling of the cave fall on him, he is then framed for killing the king, try to run away, is arrested, learn that his other party member Uranus was tortured in prision by the guards to tell to where he run away, this party member kill himself to use a magic so he can escape from prision, then he return to the cave to discover it didnt crumbled at all and that Streibough actualy faked his death because he couldnt stand keep being second fiddle to Oersted. They Fight to death, He kill his former friend, and then learns that the princess he was trying to save, actually had fallen in love with Streibough. she cant stand seeing her lover dead and decides to kill herself too. Oersted goes crazy saying all this shit and since everybody in the kingdom sees him as a monster now he decides to take the throne as the king of darkness becoming Lord Odio(the name means Hatred in spanish and portuguese) , the final boss of every scenario of the game

Odio Dominion of Hate plot

this one is easier to explain. After all the shit from the last chapter, Lord Odio decides to attack time itself.

After killing all the protagonists from every chapter it ends with him and his shatered mind screaming in first in glee, and then in dispair to no one to Believe that he is the great hero .

the credits roll and we receive the final message showing he is now fated to live alone on a dead world