I am a male, with a height of 178 and a weight of 97 kg. How can I gain weight15kg in three months and be as thin as Kun?

You can eat some egg sugar food for breakfast (there must be egg yolk), some meat at noon, preferably good pork belly, soup at night or something with high sugar content. Sweet potato and corn can't be eaten, and eating nutrition will make you thin. Of course, you can eat some hot dogs or fried food. Of course, these are not recommended, which is not good for your health, but fried foods and foods with high starch content are still good choices for you to gain weight quickly.