List of Service * Correct pronunciation: Osawa = Ōsawa = Ohsawa = Oosawa = O o sa wa (Pronounce fluidly and quickly) The following services are currently available! QuizQuiz International NovelNovel International Adult Novel (R18)Adult Novel International (R18) The following services are currently under upgrade or development! RankingRanking International ListList International TextbookTextbook International EncyclopediaEncyclopedia International Q&AQ&A International