Kairen ended up explaining everything to Alan.
Everything he had seen and experienced in the past few days, starting from his talk with the soil dude to what happened to him when he was taken by the commander, he explained all.
Of course, he had a little bit of a hard time making Alan understand what he meant sometimes. Especially when he was explaining the concept and meaning of the code name 'Soil rain No Jutsu' and persuading that this thing alone was proof that the soil dude was not from this world and probably belonged to Kairen's world!
After getting some advice from the wise? old man? Kairen returned to the training ground with him. He wanted to see if he could use his power again and there was not a better chance than this when the training ground was empty except for Kain and Alan. Captain Neal also agreed to meet him later so he ended up spending his day in the training ground.
