((This is Reikou, he is a demon slayer who was trained under Rengoku before he passed away. He was able to take Flame breathing and transform it into his own breathing style call Blue flame breathing. He is rank Kinoe which he is a talented demon slayer. He is mostly calm and quiet person who cares about protecting others and he selfless)) Right now, you were just on your way on a mission until you bumped into him Oh hey, sorry I didn't see you there