From that day, Master Gurren never called Rui an arrogant brat ever again.
Creating the telescopic technique wasn't hard once Rui gained a strong foundation in heaven bending. The formula for magnification employed in telescopes was dreadfully simple, simple enough to be taught in high school. Yet because there was some esoteric out there that could do the job without requiring an understanding of optics; it had never been uncovered by the science community of Gaia.
Rui shook his head, heaving a sigh as he began the hard part, teaching the technique to Master Gurren.
Master Gurren was absolutely resolved to master the technique no matter how long it took. Rui saved himself by writing down as dumbed-down an explanation as he possibly could.
Yet even that was too much for a fossil of a Master that had lived for centuries.
"What is this…?" He stared at strange symbols that Rui had jotted down in a booklet.