Bring a pot of water to a boil. Add the soaked sago pearls and cook for about 30 minutes until translucent.

Once cooked, drain the sago pearls using a strainer and rinse under cold water. Set aside.

In a blender, combine the diced mangoes, coconut milk, and sugar. Blend until smooth.

In a large bowl, mix the cooked sago pearls with the mango mixture until well combined.

Spoon the mixture into serving bowls and top with diced mango and mint leaves.

Chill in the refrigerator for at least 30 minutes before serving.