Hi Kai! Yes definitely related. Your blade profile is what is called "dahong buho" or "dinahong buho", common among several towns in the province of Laguna, Luzon. As for the hilt, that's a curious style, and echoes antique iterations of 'tabak' and 'dahong palay/dinahong palay'. I'm guessing yours was made in Laguna as well. May I also see its scabbard?