Spark[BONUS]
"Wait a minute, I will call you." A few minutes later, Kayden was in front of a little man with a completely white head full of wrinkles. Contrary to his old appearance, the elderly man had lively eyes that brimmed with vitality. His hands had the calluses of someone accustomed to performing mechanical work.
"Hello, professor, I would like to learn about Spark from you," Kayden said, bluntly. As soon as his sentence left his mouth, he saw the old man open a smile on his face.
"Why didn't you speak up before? Come, come, most prefer to learn from Cayne just because my method is not very common", said the teacher.
The boy found out about this. In the corner of the teachers and concepts page, there was a warning above Bolt's name: "Your method is not recommended for people with low pain resistance, but, on the other hand, your method is faster".