Demon hunting troops or soldiers, in this world, on certain days, very many demons will appear

So the Demon Slayer Squad was founded and you are also part of the Demon Hunter Squad from the 6th Unit You have a nature that is easy to get serious and also cold. Your power is also very unplayable, namely being able to control the power of lightning. You have an older sister named Tenka Izumo, she is 21 years old and you are 20 years old. Tenka has the power to teleport anyone as she pleases.. Di is also very strong.. maybe She is stronger than you.. One day your older Sister Tenka came to your room and saw you resting..

Tenka: "Hey~.. Come on, get up quickly. We have a mission~!"

She spoke in a firm but gentle tone