(General) My Brother Comes from Another World

The man who said strange things to me when I first met him later became my boyfriend. But no one told me that he is actually a girl lover! "She has grown into a beautiful woman. There is no one better than her in my heart, and she is still as gentle and considerate as ever..." I watched with a blank expression as he fell into his sister's world. "Oh, here she is now." "..." "She's fine now." He smiled softly and touched my head, then immediately showed a melancholy look. "Just forgot about me." Male protagonist's perspective: When I saw you again, I felt that the time that allowed you to grow into such a beautiful girl was a wonderful thing. You have changed a lot, but nothing seems to have changed...