ドコモ光ひかりMeanings1noundocomo HikariserviceBrand name for NTT Docomo's fiber-optic Internet service.ドコモ光ひかりに申もうし込こむと、スマホの料りょう金きんが割わり引びきになります。If you sign up for docomo Hikari, your smartphone bill gets a discount.
