Love and passion are obvious possible themes as the title has 'blazing hearts'. Another could be commitment since a love story often involves the characters' commitment to each other.
In 'Blazing Hearts: A Love Story', it may center around a couple. Their love could be described as 'blazing' perhaps because of its strong emotions. It might start with an instant attraction and develop into a deep, abiding love. There could be external factors that either test or enhance this love. It might also explore themes like sacrifice, loyalty, and the power of love in a unique way.
One possible theme could be the power of love in a big city. Tokyo is a huge metropolis, and love can be both a refuge and a source of strength in such a busy place.
One possible theme could be leadership. If it's about a person named the 'king of hearts', his leadership style, whether it was benevolent or not, could be a theme.
A theme of transformation is likely. Losing one's heart could lead to a complete transformation into something monstrous or unrecognizable. This change from a normal state to a horror - inducing state can be a powerful theme, showing how far a person can fall when they lose an essential part of themselves like their heart.
Love and reluctance could be a major theme. It might be about characters who are hesitant to fall in love or admit their feelings.
One possible theme could be loss. Since the title mentions 'lost hearts', it might be about the loss of something precious like love, hope or identity. Another theme could be the Filipino experience, which could include cultural elements, family values, or the impact of society on individuals.
One possible main character could be a war veteran who has PTSD from the traumas of war. Their 'irritable heart' would be a result of the flashbacks and emotional distress they experience. The other main character might be a partner, a friend, or a family member who tries to understand and love them despite the difficulties.
A third theme might be the pursuit of dreams. If one or both of the lovers had big dreams, like traveling the world or becoming an artist, their love would be intertwined with their individual pursuits. They might have to choose between love and their dreams or find a way to make both work in the context of their relationship.
One possible theme could be sacrifice. In 1941, during the war, lovers might have to sacrifice their time together, or one might sacrifice their safety for the other. Another theme could be hope. Despite the dark times of war, their love could be a source of hope for a better future.
One possible theme could be nostalgia. Since it's related to 1989, it might evoke a sense of longing for the past, especially for the time when the love story took place.