Rino did not need to look at the tutorial to know how runes were crafted. While he wasn't an Elementalist, it was still something the magician tower made sure to cover. Rino drew a few runes and circles for some jobs, but mostly, he was familiar with archaic rune languages because of alchemy. Rino invented runes of his own in the previous world, but they were of no use in this new world.
Rino had no idea if this new world followed the same laws as his old world. The runes he invented used the core of the planet's energy to fuel his mana bomb. They were homing target markers for a timed explosion. He plotted the destruction of his world for many years carefully, but this time, there was no need to destroy this world. As long as Rino did not have to put up with crappy human existence getting in his way of greatness, he would let them live. Besides, it wasn't as if the Gods were going to let him get away with it more than once.
