Okay, let me explain this.
I didn't see many Eternal Senia crossovers here, and absolutely NONE with Kingdom Hearts. As someone who 100% completed Eternal Senia over the course of six and a half hours, I LOVE the game and I wanted to see it crossed with Kingdom Hearts. I don't exactly know how I'm going to make this work yet, but Sora, Riku, and my OC Melany will be included as usual.
I absolutely LOVED Eternal Senia when I played it! It is SUCH an emotional rollercoaster, and it has an absolutely beautiful storyline to it. If anyone is looking for an amazing anime-style game with easy controls and a good story, I highly recommend Eternal Senia. :)
Kingdom Hearts also has an amazing story, and from the few games I've played(Never played any of the Ps2 games or Birth by Sleep as I have never owned the platforms they were designed for, so I read some of the mangas which makes my family insane), it's an AMAZING series with really cool characters and fun gameplay though they do get difficult towards the end.
So with all that being said, while I don't know how I'm gonna play this out yet, I know one thing; this is something I really want to write, because Eternal Senia and Kingdom Hearts both have a few similarities (hero battling against all odds to reunite with someone, one character battling some type of dark power within them, and many emotional moments) and I thought the two of them would make a good crossover.
I'll put up the first chapter when I come up with a good story that makes sense~! Until then, bye! :)