Transmigrating isn't a wonderful thing. It won't instantly elevate you above everyone else, and it won't send you to some ideal, beautiful world.
You'll end up in a utopia meant only for the supernatural and the rich. Your girlfriend, whom you thought was your beloved, will deceive and frame you, and you'll be branded a villain the moment you appear.
In a world like this, you lose the right to be a good person from the very beginning. The only thing you can do is become a true villain.
Slaughter all those self-proclaimed paragons of justice and their righteous allies!
Then tell the world that the [Savior] of the wicked has arrived.
"I just want to live a quiet life."
[Congratulations, Host. You have obtained Killer Queen's First Bomb.]
"Wryyyyyyyyyyyy!"
[Congratulations, Host. You have obtained the ability of a Vampire.]
"You're asking for it!"
[Congratulations, Host. You have obtained Devil's Wings.]
"Drink up. This is your destiny!"
[Congratulations, Host. You have obtained Soul Absorption.]
"Waggggggh!"
[Congratulations, Host. You have obtained the Wagggh Stand.]