I'm not sure specifically as there could be many different 'tsuki tsuki light novels'. It might be about a variety of themes such as fantasy, adventure, or relationships. Without more context, it's hard to say exactly.
Online platforms are also a great option. Websites like Amazon might sell physical copies of 'tsuki tsuki light novel'. And if it's available in digital format, e - book platforms like Kindle could have it too.
You can try to find it in some online e - book platforms. Some websites may offer this light novel for reading. Just search for it by its name on these platforms.
Yuma and Tori could be characters from a small - scale, indie story that has a dedicated but not widely - known fan base. The fanfiction allows fans to expand on their relationship, imagining their married life in ways that the original story might not have delved into deeply, perhaps adding more depth to their characters and their connection.
It's also possible that Hana is related to one of Naruto's friends. Maybe she's Kiba's sister or something. And because of her connection to Naruto's friend, Naruto feels responsible for her safety. So when she's in trouble, Naruto steps in to save her without hesitation.
Finding such fanfiction can be a bit tricky. Usually, these types of fan - made stories are quite niche. You might have to dig deep into the search filters on fanfiction platforms. Maybe start by searching for 'Victorious' fanfiction and then look for ones that involve Tori in a pregnancy - related storyline within the search results.
Hana could be an original character created for this fanfiction. Maybe she is a new ninja in the village who Naruto falls for, but she has a hidden agenda that ends up breaking his heart.