MrOogieBoogie
BioShock Infinite is like playing some homeless guy's vivid imagination
I still think it's one of, if not the BEST side quests ever in a game. Despite the fact that nearly all completely nonlinear games these days have some number of side quests, I find it amazing that the Anju & Kafei quest, even with limited assets at its disposal, continues to be one of the most intricate, expansive, and involved. I think a lot of it has to do with the fact that it's so memorable. I can't really recall any standout quests from the Grand Theft Auto series, the Elder Scrolls series, the Fallout series--whatever--that weren't main quests.
The reason why it's so memorable is because it's so rewarding. The quest can still be a pain in the ass to complete if you're not absolutely on top of all the events (both time and place), so when you do in fact reunite the two, it's a sigh of relief almost thanks to the arduous journey.
Of course, the real tragedy here is that you have to revert time since you have less than an hour left until the moon plummets into Termina and kills everyone, and all your efforts were for naught. There's something to say about a game that makes you run the timer down just so you can save this special moment for these two characters for as long as possible.
The mood at the end is only accentuated by the remarkable Final Hours piece from the game's soundtrack. It's terrifying, yet at the same time sublime.