Littering is prohibited in Japan.
Please take all trash with you when you leave.
Please be aware that if you litter within a Beautification Enforcement Area, you will be fined up to 30,000 JPY.
For details, click here: http://www.bika-kyo.jp/en/ (Language: English)
2Rs Action Guide for Reducing Waste
http://kyoto-kogomi.net/wp-content/uploads/2018/08/shimatunokokoro3english.pdf (Language: English)