Iya Villania, Drew Arellano's son Primo helps brother Leon learn the alphabet

Primo Arellano is doing his "kuya" duties by teaching his younger brother the correct order of the English alphabet.

On Instagram, Saturday, Drew Arellano shared a heartwarming video of his sons bonding over an educational game.

In the video, Primo was seen guiding Leon to choose the correct answers to the game. After they finished the first set, Primo told Leon that he had to do it two times.

"Kuya Primo is a strict educator," the "Biyahe ni Drew" host wrote in the caption.

Drew has been married to Iya Villania since 2014. The couple has four kids: Primo , Leon , Alana , and Astro .

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—Hermes Joy Tunac/MGP, GMA Integrated News