Claude: I'm not sure I can take that as a compliment, Celine darling...
Wow, that was unexpected! Having ignored Claude's romantic relationship with the girls in the party most of the time, I figured he'd end up with Rena, or even Precis... The last Private Action he had with Celine was in North City, if I remember correctly.
Ahem! I'm sorry, please let me explain the whole thing to the unacquainted with the game.
The group reaches L'Aqua and meets up with Narl; as they're all ready for the final mission - attempt number 2 - the mayor holds a brief meeting in the conference room. He explains that while they've already defeated three of the Ten Wise Men, we will still call them 'Ten' because we're used to it... er... I mean, he explains that the others are way more powerful than those, and now that the threat our heroes pose to their plan is known to them, they may try to employ more effective tactics as well. However, all he can do is ask Claude and the others to be fully prepared for the assault, which will take place as soon as possible... Tomorrow!
Narl tells our friends to enjoy their 'last night' in L'Aqua (this time it's for real, although, game-wise, you can still go back to explore Nede some more whenever you want), which, despite being a military outpost, is still quite a charming place, with all those lush natural surroundings, and the sea shore. Tonight is a quiet, clear, starry night, the perfect moment to spend some special time with the one you love, before the final battle. Claude, despite the advice he gave to Leon, is very fond of double-timing, as he was involved with all the girls in the party (except for Opera... If only we hadn't found Ernest, she'd be... Oh, sorry), but who is the one he really loves? And does she love him back?
The real question is, though, is Celine really the one for Claude? This night doesn't establish that, but it's generally a good enough indicator of that. The pair exchanges some romantic words with one another, and we leave them close together, as the view scrolls up to the starry sky.
Not happy with how the scene played out? Don't worry! This is a game, which means you can have fun with the characters' feelings all you want, and never feel bad about it! For example, there are ways to quickly alter the romance level between characters right before this night, allowing you to view practically each and every possible combination (only between Claude and one of the girls, though, so be warned). If Claude has either a high or a low romance level with every girl (that is, if everyone is about at the same level), you can easily use the authoring skill of each character to make only one girl have a high enough level, resulting in her spending the night with Claude for sure. If that's not applicable, then it may be harder, but it's definitely possible.
What's with the authoring skill screwing with people's hearts, you ask? Well, if a character produces a book, by means of his/her Writing Specialty (and a fountain pen, aren't we the refined writers?), and makes another character read it (once read, the book is discarded for some reason, so always make extras), it will alter the relationship level between the author and the reader. More specifically, one of the books a character can make will alter friendship, while the other (they're randomly chosen, but this one is more rare) will affect romance; in any case, the relationship level will always reach a fixed level (technically, it's an 8 out of 12). Make romance books as needed to have a romantic relationship above the rest, and you're done.
Yes, I did that with every girl (didn't bother with every man in the Rena story), because it's easier than manipulating the game ending (having to win the last fight and all). Unless I've screwed up somewhere, the scene with Claude and Rena is the most platonic one, possibly even the most cliché (after all, it's the one you're most likely to watch). None of these show anything beyond a kiss on the cheek (I'll let you guess who the girl is in that case), and I bet it's the same for Rena.