Shokugeki no Shiro Cooking,Cold MC

This is a different story from Souma.
What if he got a younger twin brother name Shiro but they were seperated because of their mother's family?
And what if his mother's family background are from an assassin family that stayed for many generations?
And Shiro being the heir of this assasin family and begin being a young lord of an dangerous family and being a world wide assassin and the king of the underworld himself in the underground but also want to be a great cook like his father and mother in the surface?
What will be the story of Shiro when he enroll life in Totsuki Academy that want to be a great chef while keeping his secret the assassin life itself to protect his important people?
And what other secrets does Shiro keeping from his friends and family?
Find it out!

This only pure fan fiction I don't own anime's and manga's that I use on my fan fiction.
Other characters of my mine are made by me.
And there's no harem in this novel but I'm giving Shiro some potential partners and some lovely cliche romance but I only give one partner for Shiro until the end of my novel but there's also some cliche childhood romance and some self proclaimed fiance so that there's also comedy into these novel

There might wrong grammar in my novel but I'm working on it and if there's something wrong or you want me to add something please tell me. Because this is my first fan fiction. And please don't hate me for stealing some dishes that aren't mine because I'm not a great cook in my life. Please I'm so sorry in advance. And if the chapter is short I'm working in it in the future.