Air Nippon? Since you're talking AA miles I'll assume you're referring to Japan Airlines (JAL/JL). And no you cannot transfer Avios to AA. You have to book with the program, Avios, partners.
Air Nippon was a subsidiary of All Nippon Airways (ANA/NH) but doesn't exist anymore. ANA is a Amex MR transfer partner with a great redemption rate for J class awards.
You can do a 1.25/1.5 cpp redemption via Chase Travel.