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StardyStar ... ⬇ "Stardy - Kono Gento's Amazing Lesson ⬇ @Stardy ⬇ Collaboration Video ⬇ • We had a quick solving contest for the Common Test Mathematics IIB with the Integration Circle from Osaka University!!! Please subscribe to our channel!!! ◯ For business inquiries, please contact sekibuncircledx[@]gmail.com. (Please remove the [] from [@].) ◯ LINE stamps are now available!! Here's the link ↓ https://line.me/S/sticker/12764016 ◯ Twitter accounts Official Sekibun: / sekibun_circle Kim: / kimu_hyojun Hashiken: / hskn_integral Tattsuu: / tattsuu_int Yuuyu: / yewyew_sekibun Piromaru: / piro_integral Waga: / waga_integral Sun: / sun_sekibun Saruel: / sarrouel_intera Runto: / lunto_integral Edited by: Sarueru