Super Saiyan Blue is the defining power-up of Dragon ... which makes the "tingly backs" feel entirely out of place. Future Trunks' power-up at the climax of his eponymous saga comes completely ...

Super Saiyan Blue Kaio-ken is a form of Super Saiyan ... so dangerous that the Omni-King Grand Zeno had to destroy Future ...

This was even harder for him when he realized that Goku had become the Super Saiyan, and later on, a mysterious boy named Trunks had achieved ... unlocked Super Saiyan Blue. Vegeta and Goku ...