Seijo Ishii's "Chia Seed Pomegranate MIX" is sour and wakes up-try it if you get tired of coffee
I often buy coffee so that I don't get sleepy at work, but recently I've been worried about drinking too much. Sometimes I found "Chia Seed Pomegranate MIX" by looking at the drink corner of Seijo Ishii in front of the station to make it different.