" Mr. Gu, Please Give Me Some Guidance for the Rest of Your Life " might fit the theme you're looking for. It tells the story of a person who left an irreplaceable mark in his life, but suddenly disappeared. It's a story that people will never forget. I hope I can satisfy your needs. If you have any other novels you want to read, please share them with me. I recommend the following novels to you. Mwah!"" The Lost Land of Rebirth,"" The Fox Demon Princess Leng,"" The Nine-Zero Time Is Slightly Warm."😋I hope you like my recommendation.