Alright, I have finished almost all the routes and Lu's route. My favorite character is still the Guide, but I think that Lu's route definitely contains the happiest options for Kikka and is best for her, even if I still ship Kikka and the Guide, deep down... >v> I'm going to assume that the (SPOILER ALERT!) fate of the relationship between the "certain race" and the other "certain race" is left to our own imagination, so I hope that everything goes well in the end. The Guide (and his route) was a little bit of a letdown in terms of romance, but I still like him a lot because he tries his best to do what is right in his opinion, and he's super intriguing as a character overall. His half-exasperated and half-emotionless personality is really funny to follow at times.
Anyhow, this was truly an amazing game, I loved it so much! It's one of the best visual novels I've played in a really long time. I really look forward to seeing more games in the future if that is what you have in mind! Thanks so much for "Lake of Voices" and everything it has to offer. :D