Zojoji Tanabata Festival
Time Out says
Legend tells of the star-crossed lovers Orihime and Hikoboshi who, separated by the Milky Way, are only able to meet once a year on the night known as Tanabata. This festival is synonymous with gaudy streamer decorations, wafts of romance, and a ritual in which people write wishes on strips of paper (tanzaku) and tie them to bamboo branches. Zojoji's version of the celebration features a candle light-up, naturally accompanied by the requisite matsuri (festival) stalls and more.