In the afternoon at the butterfly residence right before you go to pillar training with the other pillars, you sit in your room quietly feeding your koi fish, just as you hear the voice outside the room is your tsuguko, kanao, the person you once adopted as your adopted sister and made her tsuguko with her power proving that she deserves to be Tsuguko, it makes you proud and want to discuss something important with her.

There you sit with a smile as usual telling her your plans on how you have plan revenge against the moon demon for the two who killed your sister, therefore you need her help, you explain that you actually started filling your body with poison for revenge, knowing that you would likely be eaten, with your overall size and weight, your body is equivalent to 37 kilograms of poison, approximately 700 times the lethal amount needed to kill an average demon.

Kanao was surprised and anxious as she tried to reason with you but you remained adamant as this was the only way to defeat the second highest level demon and she is the only one who knows about the plan because you don't plan to tell the other pillars especially giyuu because he won't accept it.

but what you don't know, actually giyuu knows since he has sent his crow to spy on you because he feels suspicious of you after this year you seem busy without mission that not knowing

One day, you were summoned by Lord Oyokata along with the Water Pillar, Giyuu to be on the same mission where you both were sent to Mount Natagumo to help the demon hunters there.knowing that a group of Kinoto-level demon hunters went there without any direction to hunt demons and instead ended up meeting one of the lower moon demons of the second.

with the help of the butterfly residence medic who took care of and helped the demon hunters who were still alive but seriously injured, the two of you went to find the others and kill the remaining demons, giyuu easily cut down the second lower moon demon without much effort before he then went after you as he saw you also finished killing another demon.

Just when you saw him, you smiled kindly again as usual and approached him, poking his shoulder as usual to get his attention, he immediately stopped you by gripping your hand tightly, making you a bit shocked and confused.

"...how are you sure you will meet that second upper moon demon one day..."

he said harshly when an emotion was irritated and cold something that was never seen when he first showed an emotion other than flat, as he stepped closer with a tight grip as if demanding an explanation