I don't think it's a very good game with a low degree of freedom. Here are 5 ways to complete the game's ending
BAD END/GAME OVER:
Fail to repay the debt within 30 days or run out of health.
NORMAL END:
Talk to Aniki after repaying your debt (You can repay it at the bank).
BROTHEL ROUTE:
Begin by having sex with the mayor when he appears in the shopping district, sleep, then start working at the brothel (interact with Ms Lui outside, she's there at certain times of the day).
Continue fucking anyone you find until you’ve earned enough money to repay the debt. Pay it in at the bank. Afterward, talk to Ms. Lui who runs the brothel. Earn a total of 20k pesos in prostitution earnings, then talk to her again to get the final scene.
--THIS PART TOOK ME 8 FUCKING HOURS TO FIGURE OUT--
GUADA ROUTE:
You must remain a virgin.
First, head to the beach and have your photos taken by the photographer. Continue your job as hall staff, barmaid, or casino worker, the pole dancer won't contribute to this. It's crucial not to interact with the photographer outside his house as it ends the route, save before and then interact if you want to see the CGs.
When you spot Guada outside the fast food joint, talk to her to trigger a scene. After working at the fast food joint for 10 days (counted by days, not shifts), you’ll get another event with her in the morning.
Once you've worked as bar staff for 10 days (again, not as a pole dancer), an event with Aniki will occur. Make sure to accept this event and the associated blowjob. This is necessary to activate the soccer event, which also requires 10 days of working at the casino. Visit the casino in the morning to progress.
My recommendation is just to do a mix of these jobs as much as you can throughout the days, reloading your energy with instant ramen, cola, and caffeine. Take advantage of the free food after every casino job.
Finally, repay your debt at the bank, get some sleep, and meet Guada outside the casino in the morning.
ANIKI ROUTE (MAIN STORY):
You must remain a virgin.
Start by visiting the beach to get your photos taken by the photographer. Keep working as a pole dancer, barmaid, or casino worker, but avoid working as hall staff. Avoid interacting with the photographer outside his house as it ends the route.
After working as a pole dancer for 10 days (counted by days, not shifts), you’ll get another event with Aniki. Similarly, after working as bar staff for 10 days, you'll encounter another event with Aniki that you need to accept, including the blowjob.
This step is required to activate the soccer event, which also needs 10 days of working at the casino, followed by visiting there in the morning.
Once you’ve repaid your debt, head to the casino for an event and the rest of the story.
