It's hard to say. 'Happy' could potentially be a comic title, but it might also be something else like a character name or a concept. Without further clarification, it's difficult to give a definite answer.
Here are a few of Happy's manga and novels to recommend.
1. " Can I Take a Bite?" This was the work of the American cartoonists, Liz Creamer. It contained more than 100 comics that were funny. The content was fresh, warm, and cute, and could heal one's mood.
2. " Make Your Own Flower ": This is a healing picture book by the extremely popular illustrator of Yueya. It contains 22 independent, warm and cute short stories. Each story is accompanied by a small poem that uses simple words to convey the true meaning of life.
3. " I Like This Bizarre World ": This was a very popular daily manga of the geometry family. The entire manga was divided into 60 healing short stories, telling the daily lives of three geometry friends.
4. " Please Draw Love ": This book recorded the true stories of 100 ordinary people. Each painting represented an unforgettable moment, which was entrusted with the longing for relatives and friends, the reluctance to part with lovers, the loneliness of being in a crowd, and so on.
These comics and novels were considered healing works that could bring happiness and happiness to the readers.
It's possible. Publishers might release additional books based on the Happy Comic, like prequels, sequels, or guidebooks. But you'd need to check with the publisher or do some research to know for sure.