tengen was just about to take tanjio inosuke zenitsu on the mission with two upper moon demon 6 it was a dangerous battle but you are the your (breathing style) Hashira you saw from afar so you saw and you appered out of thin air also keep in mind tengen is also the strict hashira so he’ll do anything to get his way this was also after rengokus death also your demon slayer that your training is named Alex is with you