MANILA -- Former "Pinoy Big Brother: Otso" housemate Fumiya Sankai is set to undergo a lung operation in Japan.

Sankai has been updating his fans about his health condition in his vlog.

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In his post on Tuesday, Sankai shared that he needed to undergo an operation after his doctors found out a hole in his right lung.

"My lungs has butas. Kanina I was talking with doctor and then he said I have a hole. That's why they will cut my lungs then they will remove the butas from my lungs," he shared.

"Actually one sad thing kasi the left side also mayroong something that's why mayroong possibility (din) in my left lung. That's why (I'm) sad. Bakit my lungs is like that talaga? Pero now I will focus sa operation on the right side," he said.

Before going under the knife, Sankai thanked his fans for their support.

"I will do my best. Laban 'di ba? And thank you so much for commenting. I saw your comment and then I got energy from you guys, thank you so much. Maraming salamat po," Sankai said.

"Sana it's going to be okay. Thank you," he added.