question regarding the electric power for japan, is it possible to use our extension power cord here in japan? since 1 person is having alot of stuff to charge...is it ok to use ours or we have to buy theirs?

going to tokyo this sat...hope the weather there is good for the next 2 weeks...which i research that there might be big wind hitting japan

is yoyogi park still open? wanted to visit the meiji shrine as well but the entrance seems close today on yoyogi....is it opening at specific time?

yes u can keep your bag...if not mistaken is around 500yen based on my largest baggage and the max time is around 1/2 weeks of keeping but i only keep for like 6 hour till morning 7am and leave the airport..is on the 1st (or ground floor) where u can find it near the toilet...should be on the arrival hall for international..you can also pay 1000 yen for bath there haha (very nice the place)