His name is Lim Sungjin - a volleyball player who got 2nd place at the 11th Asian Boys U19 Volleyball Championship . In his 180823 instagram (limsungjinn) post, Sungjin took a screen cap of his following which shows various Sana fan accounts (he followed over 17 Sana fan accounts) with the caption: "No Sana No Life ㅠㅠ"