So 6 years ago, my mother borrowed me a manga, its about a plane war, so heres the story : main char is like op in plane, but the antagonist is like scary and have very good plane. Before the antagonist attacked/ambush, the mc promises to his girl(friend) to work at her restaurant after the ambush is done. So in the ending art/cover (idk what it is) the mc brought a jacket on his shoulder, wear a cap, and look like walking to the restaurant. The problem is, i goddamn forgot the title, can you help me? 😁 😁 😃 😃 😀 🤣

Ps : i think the title has "blue" words.