I'm not sure what the specific 'arti chotu love story' is. Maybe it's a story between two people named Arti and Chotu. Without more details, it's hard to say more about it.
The original text of Pipi Longstocking included the fact that the protagonist, Pipi, was a strange and interesting little girl with red hair, freckles, a big mouth, and neat white teeth. Her name was Pipiluda Victoria Ruulgadia Crusmunda Efraim Longsocks. She was wearing a brown and a black stocking, and her shoes were twice the size of her feet. She was very strong and could lift horses and cows, and subdue thieves, robbers, bulls, and sharks. She had an endless amount of gold coins and often used them to buy candy and toys for other children. She was kind, passionate, and liked to joke and take risks. She often came up with wonderful ideas and created miracles. This work won the love of the children.
Pipi Longstocking was a story about a strange and interesting little girl. The protagonist, Pi Pi, was a powerful little girl who could easily lift horses and cows, subdue thieves and robbers, and even subdue stubborn bulls and man-eating sharks. She had an inexhaustible supply of gold coins, which she often used to buy sweets and toys for the children. Pipi was kind, passionate, considerate, liked to joke and take risks, often came up with wonderful ideas, created miracles, and won the children's love. Pipi Longstocking was one of the masterpieces of the Swedish children's literature author Astrid Lindgren, and had been translated into many languages.
There could be characters like Hera Syndulla. She is often associated with Kanan and might play an important role in the graphic novel. Maybe Ezra Bridger could also be in it as he has a connection to Kanan in the Star Wars lore.
I'm not very familiar with the specific love story of Arti Singh and Siddharth Shukla. Maybe they are known in a particular community or context that I'm not fully aware of.
Whether the Kanan comics are canon is a matter of debate. Some aspects might align perfectly with established lore, but there could be elements that don't quite fit. It's not a straightforward yes or no answer.