In Japan, Christmas Eve is supposed to be the most romantic night of the year.
Traditionally December 24 has been the big date night in Japan, where couples pair up and spend a special evening together before returning to work and the boring office routine on December 25; Christmas Day is not typically celebrated in Japan.
This societal change is now starting to affect Christmas Eve so much that a new word has been coined: kuribotchi.
— ぽっぽ (@poppi_polla5r) December 2, 2014 
At work a bunch of the junior staff were happily discussing their kuribotchi plans. “And just what the heck is kuribotchi?” I asked with a laugh. There was an awkward silence. And then I got what they were talking about.
A neologism created by combing the words “Christmas” and “hitori-botchi” (all by oneself), kuribotchi describes the condition of spending Christmas Eve alone.
This news report from December 2013 asks the big question: what are your plans for Christmas Eve?
“I'll be kuribotchi.”
In November 2014, online restaurant reservation service OpenTable  surveyed nearly 1,800 people in the Tokyo Metropolitan area between the ages of 20 and 30. According to the survey, nearly 60 percent of respondents said they were not in a long-term relationship  or even dating.
Some restaurants and hotels have launched kuribotchi specials to cater to solo diners and Christmas Eve celebrants, capitalizing on the fact that an equal number of singletons planned on either staying at home or eating out on Christmas Eve (respondents could select more than one activity):
Significant for restaurant owners, however, is that about 43 percent of the 20-something survey respondents said they would spend no more than US$100  celebrating Christmas Eve, a striking contrast to the booming bubble years 25 years and a generation ago when the sky was the limit in terms of how much to spend on a big date night.
More and more Japanese 20-somethings are starting to embrace a solitary lifestyle:
1人焼肉をしてしまったら、もうリア充復帰は不可能だと自覚しています。 ただ肉食べたい欲求には勝てないの＞_＜ ソロ攻略。これで二回目……(もう手遅れ)ん pic.twitter.com/Oaz1yVczTB 
— 悟りを開いたJIME(中の人) (@jime0714) November 19, 2014 
Once you decide to eat Korean BBQ by yourself, you realize there's no going back to an active social life.
In this context, “ria ju people” have active, vibrant social lives with plenty of friends. In contrast, kuribotchis represent another trend in Japanese culture, where people interact with each other mainly online through a computer interface.
In real life, Japanese society is still adjusting to the solitary ways of singletons:
ヒトカラきたのに25人の部屋に通された pic.twitter.com/OPLo8YDMUY 
— みんなが体験した事なさそうな体験談 (@warauikenai) November 21, 2014 
When I asked for a “single” karaoke room, they brought me to a space big enough for 25 people.
Others are still figuring out how to prepare winter dishes that would traditionally have been eaten with others, like hotpot:
センスないなぁ．美的センスゼロだね．何が足りないんだべ…でも…秘密基地好きだな．１人鍋さ〟 pic.twitter.com/GBaEkJJVqT 
— はな子 (@im0ki1013) November 14, 2014 
There is something that is just not right here. The presentation here is totally awful… it's lacking something. On the other hand, I like being holed up here with my hotpot for one.
A nascent meme on Twitter is people taking a solitary approach to playing board games meant for more than one player:
ふうちょんちで1人人生ゲームなう pic.twitter.com/KLpot0EKmy 
— NO (@rmlsasfmfcc9) August 3, 2014 
Playin’ the Game of Life all by myself.
1人人生ゲームスタート(^_^) pic.twitter.com/3oAfhWyHwc 
— 岩手の沖縄 (@tomomotomo1978) October 16, 2014 
Ready, set, go: playing the Game of Life with one player.
かいけん1人人生ゲーム pic.twitter.com/rSGerjw8Jc 
— たけにー (@RBLUES0214) August 26, 2014 
I thought I would try the Game of Life with one player.
For some, however, the end of November and the beginning of December mark the start of a grim countdown:
【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日 【悲報】クリぼっちまであと24日
— しの@12/4誕生日なのだよ (@shino_1204_) November 30, 2014 
We are sad to report that only 24 days remain until we spend Christmas Eve all alone. We are sad to report that only 24 days remain until we spend Christmas Eve all alone. We are sad to report that only 24 days remain until we spend Christmas Eve all alone. [repeats five more times]
Other kuribotchis take solace from Snoopy, who also may share their plight on Christmas Eve:
クリぼっちになりそうな人RT pic.twitter.com/F2vEl8GtXp 
— time (@timesa100) November 27, 2014 
He looks like he's going to be spending Christmas by himself too.