I lived with high functioning alcoholic. No thanks. YOU bought him FOUR beers? On the first date he wants a woman to supply him with alcohol? He is an engineer from the US but has no money? Yeah, you might be better off.

Plus no one flies from Michigan to Japan to meet a woman for one dinner and then lunch at airport. Even millionaire wouldn’t. He likely went to Japan to visit his dad and combined it with seeing you (and enjoying free beer you bought). Or he was doing whatever other things in Japan all those days when he wasn’t seeing you. Honestly I’d not go to airport to meet him for lunch if I was you. I’d look for local men