Shuwashuwa, Kirari Anime Details and Episodes 1-2. Zigzag Heartbeat (ジグザグ・ハートビート) 3-5. Shuwashuwa, Kirari (しゅわしゅわ、きらり) On the summer vacation of their third year high school, Kei went to visit Koai… Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresRomanceSlice of Life TagsBoys' Love RecommendationsSensei no Iinari.Murderous Lewellyn’s Candlelit Dinner