reunion Anime Details and Episodes Music video/PV for ClariS' single reunion. The song was used as the opening theme for "Ore no Imoto ga Konna ni Kawaii Wake ga nai" second season.… Series info Watch free DetailsFormatMusicStatusFinishedEpisodes1Duration5 minScore55/100CountryJapan TagsAdvertisement RelatedOreimo 2 (Parent Story)