Should a 16 year old boy go to Japan (Osaka and Kyoto) alone?

i'm in high school (grade 11), , cousin , japanese wife have invited me go japan (osaka , kyoto) them. i'd living cousin's wife's japanese family in house, it's not i'll alone. but, sightseeing alone, might have other plans. boring travel osaka , kyoto alone? since i'm teenager, speaks no japanese whatsoever. how can have fun alone , can do? or should travel japan @ older age? i'm not sure, because don't want miss opportunity experience japan @ age..

i'm in high school (grade 11), , cousin , japanese wife have invited me go japan (osaka , kyoto) them. i'd living cousin's wife's japanese family in house, it's not i'll alone. but, sightseeing alone, they...

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