Demon Slayer: as a Retainer, I Want to Make Progress Too Much

[Multiple heroines] [Slowly strong but not suffocating] [King of Fighters] [Demon Slayer] [All important characters survive] [Real World] My name is Kamiren Chika. I don't know how I traveled through time to "Demon Slayer: Kimetsu no Yaiba" and became an "ordinary" retainer. My eldest daughter, Shiranui Kahan, is a arrogant and violent woman who always wants to hit me on the head with a fan. In order to protect her, in order to reach the finale in this Pillar of Destruction, I had to do a lot of "small tricks". I had to spend hundreds of millions of bits of "family secrets". For example... As a time traveler, it is reasonable to predict the future direction in advance, right? Another example... As a fighter, it's logical to rub a little bit of Kusanagi's fire into your hands, right? Butterfly Ninja (blushing): "Qianhua-kun, although you saved my sister... Can you stop staring at me? I'm still young now!" Kanae (smiling darkly): "Ah la~ Shinobu-chan is always talking about something different... Chika-kun, how much does the Shiranui family offer? For one person? Then our Butterfly House can pay three times~" Kanroji Mitsuri (face covering): "Wow! Is it really Qianhua-kun? I heard that he blew away the two strings with one punch... He was so gentle during the blind date before. I really hope I can go on a mission with him..." Shiranui Huayan (fried hair): "Asshole! Who allowed you to go around attracting bees and butterflies? You are my retainer! For the rest of your life! Come back and boil the bath water for me!" Looking at this ridiculously powerful demon slaying team with all members alive in front of them. And those who miss their mothers-in-law and want to be beautiful... Wuxian: "Brother! I was wrong, brother! I regard life as a treasure! Can you please say goodbye?"