Sadly there will no romantic endings with the other characters in the game, but there might be dlcs that will give you the chance to do that.
Also, you can form a friendship with the characters if you like :)
I'm not sure about the Spanish part yet.
The link is above but i can give it to you https://www.patreon.com/c/NekooBueno/posts?vanity=NekooBueno