Kuu met Kenji a lot earlier than early summer. When she was promoting Dejavu she said there was someone she liked and that was around March, before the tsunami hit. She mentioned something about giving her crush chocolate on Valentine's Day and then will wait for the White Day and see if he does something for her or something. It was so cute I'll never forget that. XD So I'd say they have been together longer than six months x) At least I think so because first news about 4 TIMES came out somewhere in May/early June.
