Looking for a lost kamikaze

My 99-year-old great-uncle has some fantastic war stories. One of my summer projects is to film him telling them, and then edit that film into some coherent account of his World War II adventures. While serving as a gun captain in the Pacific aboard the USS Oconto, my great uncle gave the order to shoot down a kamikaze bomber, and then lead the retrieval team to rescue the pilot. Seventy years later, he is still talking about how he wishes he'd learned this man's name and kept in touch with him! So part of my project is to try and figure out who this mysterious pilot was and what happened to him after the war.

What I know about this guy:

1. He was from Tokyo, but studied engineering for four years at Northwestern.

2. When the war started, he returned to Japan and enlisted in the air force.

3. Where he trained and was deployed as a kamikaze pilot.

4. He was gunned down and taken prisoner on the USS Oconto, off the coast of Biak in the Dutch East Indies, in mid-1944 (April or July).

5. The ship took him first to Saipan, where they were told they did not have room for another POW.

6. They then took him to Tinian, where they turned him over to the POW camp there.

I have every conceivable bit of information I would need to find this guy's name, except the national archives website is so hard to use and it is impossible to get through their phone system to talk to a real person. I've talked to the archives office at Northwestern, which didn't find anything (It's all sorted by names, and if you don't have a name you can't find a name.)

Any suggestions on what to try next?