One possible theme could be cultural exploration. The protagonist's year abroad would expose them to different cultures, traditions, and ways of life.
The theme of friendship and connection is also likely. Meeting new people during the year abroad, the protagonist will form relationships. These relationships could range from brief acquaintances to deep, life - changing friendships. Also, the theme of isolation might be present, as being in a foreign land can sometimes make one feel alone despite being surrounded by people.
Well, it might offer a unique perspective on different cultures. Since it's about a year abroad, it could show how the protagonist adapts to new environments, meets new people, and experiences personal growth.
The theme of forgiveness might also be present. Since there is love and hate, perhaps the characters need to learn to forgive each other for the things that have caused the 'hate' in order to fully embrace the 'love'. It could be about how love can overcome hate through forgiveness, or how the inability to forgive can destroy a relationship. Also, the theme of redemption could be there. A character who has done something to cause 'hate' might try to redeem themselves in the eyes of the one they love.
One possible theme could be devotion. If a wife is considered as one's life, it implies a high level of commitment and loyalty. Another theme might be the significance of the relationship in shaping one's identity. Since the wife is equated to life, she probably has a major impact on who the person is.
One possible theme could be luck. In many cultures, the rabbit is associated with good luck. So, the graphic novel might revolve around a character who is a rabbit or has rabbit - like qualities and experiences a series of lucky events.
One possible theme could be betrayal. If there's pain in the love story, perhaps one of the characters has been betrayed by the other in some way, like cheating or breaking a promise.
One possible theme is heartbreak. Since it's about an abandoned love, the main character must be experiencing a great deal of pain and loss.
One possible theme could be regret. Looking back at a past relationship often involves thinking about things that could have been done differently.
Love could be a major theme, the unconditional love a parent has for their first daughter.
One possible theme could be loneliness. Rainy days often evoke a sense of isolation, and if the novel is named 'My Rainy Days Novel', it might explore the feeling of being alone. Another theme could be renewal. Just as rain can wash away and start anew, the story might deal with characters starting over in some way.
Another theme might be the passage of time. As the story unfolds, we could see how time has changed the character, their relationships, and their view of the world. It could also touch on themes like resilience, as the character overcomes various difficulties in their life journey. For instance, if they faced a tough childhood but managed to build a better life for themselves later, that would show resilience.