"I hate him. And the only thing I enjoyed in between us is our arguments." STEM Series #1 Aitana Celeste Mendoza and Rux Kristian Vergara are both competitive. In short, they compete with each other ever since they were still in Junior High School. They have thought that when they will enter their Senior years, the competition between them will stop. They have thought that one of them will transfer or continue SHS to another school, but one of them did not. And unluckily, they became classmates again after two consecutive years of not being on the same class. Aitana strives to learn and to rank as first. While Rux never wanted to be second on the list. And now that both of them are on the same class again, who will rank as first? Is it Aitana or Rux? But what if the competition between them turns out to be something they did not expect? Matatapos na ba ang hilahan sa kanilang dalawa? O gagamitin lang nila ito upang mas iangat ang sarili? Will the competition result to the question of who is smarter? Or who is wiser? DEBATING WITH HIS HEART [STEM SERIES #1]