Hi Clint. I think our Japanese friends will be of more use but I'm sure the emblem is a school insignia not a character; it has a flag or pennant for Communications and 2 triangles for incoming-outgoing. Mito and Utsonomia are only about 30 miles apart and both were targets of fire-raids by B-29s on Aug. 2 and 12 July respectively. Both are on Honshu NE of Tokyo.
You might find this link useful in the future, you can draw the character and then identify it. A steady hand is needed which I havn't got. Incidentally the 105th. Training School had a similar emblem but turned 90 degrees.
Nick
https://www.japandict.com/kanjidraw