You will need:
Cheat Engine 6.1
Now go to the process.
1. Run game.
2. Run Cheat Engine.
3. In the Cheat Engine, select the process aikaru.exe
4. In the parameters of the search, select: "Value type - Text"
5. In the search string is entered the name of the skill (sensitive) and press "First Scan"
6. In the left part of the program displays a list of skills. Reckoned from the top exactly as much as you learn this skill. (If you learned by 6, then select the top 6)
7. Choosing Skill press "CTRL+B"
8. At the bottom of the window that opens reckon seven green lines down.
9. Throughout the 7 line change the value to 00, except for four since the end of the block, it remains unchanged.
10. If you did everything correctly, skill cooldown will be 1 second.
If I helped you, click the "Thanks" at the end of the text.