You raise affinity and her desire to drink (the yellow bar underneath her drunkness bar) by talking. You get her to drink by winning games or asking to drink together. Drink too much yourself and you pass out.
if you meant the stories with minigames progress then
handyman legend
peeping dorm manager
summer memories and its sequel winter memories
this game thread prequel NTR dojo
Is the trainer not working for anyone else in the first post? The only values I can get are the time of day and the 90 second timer in the battle mode.
keep drinking, while make ur partner drinking more
winning dice or guess mini game make ur partner drinking more alcohol
max drinking tolerance for MC is 100