Okay, translations for the file came out. Things are really picking up the pace, so that's great. And finally, we have suspects! Just three guys, nothing too out of hand or complicated, though there's not much to go off of right now. All of their reasons for being at the campgrounds seem legit enough (even the guy who said he was taking pictures of the azaleas doesn't seem suspicious because he's right about orange azaleas blooming around early May). If I had to just pick a guy based on what we have so far, I'd pick Yonezumi Hayamichi, the part-time worker. I'm only suspecting him because of three main reasons: his age, his hair color, and his occupation. He's around the same age the lady, so it seems more likely that they would know each other. He just says he's a part-time worker, but isn't very specific. He could possibly work at the same day-care the lady worked at (though thinking about it now a guy like him probably wouldn't get along with children well). And finally his hair color. If Yamamura is right about the dying message (ha!) pointing to the woman's older brother, then his physical appearance would most likely support this theory. That's just what I think so far, but heck it's so early into introducing the suspects it's hard to make any solid opinion.
I don't know why I failed to mention this earlier, but Gosho has another case in a forest again. Oh joy, forest symbolism in literature. I could go on and on about the devil and the BO, but I won't. It's pretty self explanatory anyway.
And as for the "mystery" woman with the ax at the end, it's so obvious I don't even have to say anything.