Nobita x Sumire x Shizuka

11 years old boy decide to change his own future as he realizes his marriage with his crush, Shizuka isn't right. As such, he chose to walk on different path so she would marry someone she truly love instead. As much it pains him to do it, he wants the best for her so he harden his resolve. However, what he hope for her has taunt him as Shizuka vows that she will never, ever give up on him. Due to Shizuka's fierce determination and love for him, in the end Sumire decide to give Shizuka the happiness she deserves after Sumire give Nobita her approval for him to date Shizuka.