Yaaaaay I'm excited you've finished this shrine!! That introduction dialogue is super super cute.
As someone who has visited and read most of your shrines, I feel like this shrine is where a lot of what makes your shrines so "Destinie" comes together: your love for Pokémon, your interest in mythological creatures (and similar things) and your merchandise collecting! I felt on every single page that this is a creation of yours, which is lovely.
Here are my thoughts as I read through the shrine!
I feel like Level-5 releases all the cute titles or something lmao, so I love that you gave examples of those titles. The whole introduction page is very enjoyable, really, and doesn't come across as dry at all despite focusing on terminology. I love the extensive breakdown of the game mechanics and the Youkai's different stats, and what stands out to me is that although you point out that the game is very different from Pokémon (since people - Westerners - seem to be quick to dismiss it while comparing it to Pokémon), you don't hesitate to use the well-known Pokémon terminology to explain Youkai Watch's stats and mechanics. :D That made it very accessible to me, and that whole page is a far better introduction to the game than that demo I played omg...
What's also remarkable is that you retain Youkai Watch's bright and light-hearted nature across the shrine! It's in the things you address, but also in the way you explain and speculate about things in a "look, this is cute! looks, this is endearing! look, this makes them more approachable to children!" tone.
Aaaand then there's how much you love how Japanese Youkai Watch is, something you point out as early as on the introduction page. Thank you so much for explaining speech patterns and name meanings (English and Japanese) - those are things not as accessible to most players, so it's always lovely to find out via other channels!
All the background on Japanese culture is really lovely, too: why tigers are usually associated with lightning/thunder in Japanese games, the Komainu line-up in other games, the contrast between these two brothers and what they're based on as well as why they may have been written this way, etc.
The only page I feel like I don't understand so well - although it looks like a lovely addition and certainly has me interested - is the family page. The letter writing and mother part is great (and you bring up the letters again on a later page), but I'm a bit confused about Komashura. Does he ever interact with the other Komas? :O This might just be reading comprehension on my part though; from what you've written, it sounds like it's left as a mystery in the game itself. Or maybe the "family of Komas" and "there are three" part has me confused, since it came across as the three of them being brothers, and then it turns out Komashura isn't actually part of the immediate family, but just of the same "species"? I would have expected the page to open with those closest to the two Komas that you're shrining.
I love the shrine as a whole a lot, but the "As Brothers" page just has me go awwwwwwwwwwwww.
And these evolution texts ARE THE CUTEST:
Komasan's travels made him grow up into a brave and dependable Yo-kai. He's strong too!
Komajiro's pursuit of his brother brought out his ferocious tiger spirit. He even has stripes!
Great shrine, Destinie!!
Komajiro: Big brother, come take a look at this!