I got this as a gift ... I have been drinking it everyday.
It is called Aojiru ... 青汁
It is very popular in Japan.
https://www.yamibuy.com/en/goods.php?id=186543&utm_source=google&utm_medium=cpc&utm_campaign=CA_all&gclid=EAIaIQobChMIvLz-iKW83wIVA9bACh32oQgOEAQYASABEgLEs_D_BwE