Prior to booking a plane ticket, I've already seen posts with tips and tricks on how to save up on this trip. Most of them would say "Eat meals from Lawson or 7eleven", "Rent out Airbnb instead of hotels", etc.. But one thing you have to know, Osaka is considered as the Food Capital of Japan. So please don't cut off your meals, you'll not regret it.
The main question I was thinking about while preparing for this trip is "how much do I need for a week long trip?" I've never found the answer anywhere, but now I have my answer. It's a wooping 55K (Php). *yes my savings account is still aching from this blow* but HEY IT'S ALL WORTH IT!
Below is the breakdown of expenses for the whole trip (all prices are in Php)