It's just another Saturday for the full-time National Serviceman (NSF), whom friends call Juan.
If you didn't know more about him, however, you'd probably think that he was just any other 21-year-old.
But Ui has lived, and is living, a rather different life from his peers, having been diagnosed with Crohn's disease when he was just 13.
He is also currently living with a stoma bag.
Photo by Abriel Tay.
In the months before his diagnosis, Ui experienced bloody diarrhoea, frequent vomiting, and weight loss of up to 5kg — all symptoms of the disease, which causes inflammation in the intestines.
"I was still very young back then, and I didn't really understand what is the illness about.