From what I gathered from the artist's comment section on Twitter, this Admiral was once a street child. Everyday, there were enemy aircraft passing over the sky of the city, and he becomes scared of air raids since then.
They are not planes.this person—The reason why this place has only ship girls who specialize in anti-aircraft warfare.Put your gun down, Admiral-san. Those are just birds.Oops... Sorry, sorry.That was unintentional... Y'see.It was recently that I came to understand.The reason why I was called here.And aircraft carriers are nowhere in sight.Just like how I dislike nighttime,He hates things that can fly in the air.