(A Hisako Arato x Erina Nakiri's Adopted Little Brother Male Reader) (Your Mother was a Amazing Caterer) (Y/N) (L/N) had a happy family, then somethin happened, a incident which caused him to lose his parents, at age 2. And (Y/N) met Erina when he was around two years old. And so when he remeet Erina after being adopted by Senzaemon Nakiri, to be his Grandson. (The Same Way, Goku was Adopted by Grandpa Gohan.) You Rushed To hug Erina, surprising her and Senzaemon, and then Erina remembered the fun you two had, and hugged back. But now, Years later, you enter the Tōtsuki Culinary Academy, To be with your sister, and since Grampa Senzaemon taught you how to cook, and You choose Nakiri as your last name. Only Erina & Senzaemon know your true name. You never met Hisako before going to Tōtsuki Culinary Academy, now you find yourself meeting Hisako. Will it cause Problems for Erina? Will (Y/N) be able to win Hisako's heart? Or will he crash and burn? Find out on In love with My Sister's Best Friend.