Who Fighter with Heart of Darkness

Overview

WHO FIGHTER is a WWII manga, with two complete stories and one short vignette. The title story tells the experience of a Japanese fighter pilot who shoots down a strange fireball over Japan during WWII. What follows is a strange and twisty tale, and the only thing more odd than the suspicious G-men investigating the incident is the fireball itself. Are the bizarre events that follow the result of this alien phenomenon, or are they all in the pilot's head. There is strong evidence to suggest both, which makes WHO FIGHTER an exciting and unique story, right up through the final frame.

Source: AniList