You can find cosmetics, underwear, socks, panty hoses, notebooks, pens, cassette tapes and films. People can transfer money like at banks and can make payments for utilities and telephone. They sell popular game softwares, tickets for movies, concerts and other events, plane or train tickets, postcards, a variety of prepaid cards and even lotteries. They also sell seasonal goods. For example, they sell small bags of fireworks during the summer, or sell boxes of cookies or seasonal food as seasonal presents.
Convenience stores are convenient place to find if it rains suddenly.
If you find a convenience store, you will be able to buy an umbrella. Or if you cannot find any restrooms around, you can ask to use it at a convenience store. Some stores are open 24 hours a day, others are open late, and most of them are open every day through the year.