All these papers you see are wishes, since today is Tanabata!
Tanabata is celebrated on the 7th day of the 7th month, and in Japan, people celebrate by writing wishes on little strips of paper and (usually) hanging them on bamboo branches. Mostly, girls wanted to be better at sewing / crafts and boys wanted better handwriting, but today, anybody can wish for anything.
For example, I’ve heard a tale about a little girl who wished to be licked by a kitten 🙂 …her mother and I think that means she wants a kitten. 😉
The original story is that the two lovers, the stars Vega and Altair (Orihime and Hikoboshi in Japanese) were so happy together that Orihime quit making clothes and her husband Hikoboshi let his cows wander all over Heaven, so they were separated by the the Milky Way (a large river). They are only allowed to meet one day a year, but if it’s raining, it means that they weren’t able to cross the river to meet and must wait for another year.