drunkard

an online drinking party; an event in which participants drink alcohol or other beverages while chatting online

chugging; downing

to chug; to down

each person

Alternative form of 一々

Short for 日曜日 (nichiyōbi): Sunday

ordinal day of a month / number of days

sun / day

the sun / sunlight, sunshine / daytime, daylight / a day / time and date / a daily (something done everyday) / the weather / a (usually unfortunate) case, event, situation