You can try looking for it on popular e - book platforms like Amazon Kindle or Barnes & Noble Nook. They usually have a wide selection of light novels.
Since I'm not familiar with that particular light novel, it's hard to give an exact similar one. However, if it's a slice - of - life or romantic light novel, you might like 'Toradora!'. It has a great story about relationships and character development. Another option could be 'Kaguya - sama: Love is War' which is also about the relationship between two main characters in a unique and comical way.
In my opinion, it's Cell for the win. Hercule is more of a comical character and doesn't have the raw power or combat expertise that Cell possesses. Cell's transformations and special techniques make him a formidable opponent that Hercule couldn't overcome.
You can start by choosing the right software like Adobe Illustrator or Canva. Then, look for inspiration online or in design books to get ideas for the cute elements and layout.
Some popular applications for turning into a cartoon include 'Prisma' and 'Bitmoji. These apps use different techniques and filters to give you a cartoon-like appearance. They might have options for customizing the style and features to your liking.