DAIGO promotes Ohta's Isan A Tablet
https://twitter.com/Daigo19780408/st...68477828014080
When 1213 is read in Japanese , it sounds like I ni isan ; 胃に胃酸 so that's why DAIGO made a pun about both 1213 & 胃に胃酸 while promoting Ohta's Isan A Tablet that he endorses = win