The smart car brand began as a joint project between Daimler-Benz and the Swiss watch company Swatch Group. In the early 1990s, Daimler-Benz, whose line-up was dominated by luxury cars of medium class and above, was looking to enter the small car market, where it could sell more cars. At the same time, the Swiss watch company Swatch Group, which had no experience in car development or production, was planning to produce and sell eco-friendly two-seater microcars and was looking for a car manufacturer to partner in the new venture. In 1994, the two companies formed a joint venture, MCC (Micro Car Corporation), and in 1998 they launched MCC's first production car, the innovative two-door 'Smart' microcar. Coupe (later renamed from Coupe to Fortwo), MCC's first production car. Subsequently, in 2000, the Swatch Group withdrew completely from the management of MCC and DaimlerChrysler (in 1998, Daimler-Benz merged with Chrysler to become DaimlerChrysler. However, the two companies dissolved the merger in 2007). In 2002, the company was forced to make major changes to its management structure, changing its name from MCC to smart, and there were constant rumours that the smart brand itself would be discontinued. However, DaimlerChrysler continued to manufacture, market and develop the smart, adding a diverse line-up of models, including five-door hatchbacks, open sports, and models with diesel and petrol turbo engines, to meet the needs of users around the world who place importance on low fuel consumption and global environmental protection. The company continued to respond to the needs of users around the world who place importance on low fuel consumption and global environmental protection. In 2016, the total global sales volume reached 2 million units, and the smart brand has gained worldwide popularity as an advanced brand with high environmental performance. This vehicle is the third-generation smart fortwo, which was jointly developed with the Renault Group and went on sale in 2014. It shares basic components with the Renault Twingo and is 105 mm wider than its predecessor. On the other hand, the RR layout and compact body size of less than 2.7 m in length, which were adopted from the first generation, have been maintained, and the model has significantly improved comfort and handling stability while maintaining the unique concept of the smart.

A generic name for a group of games, mainly bullet-hell shooting games, produced by Shanghai Alice Phantom Circle, a private circle run by ZUN. Production began in 1995 and the first game was released in 1996. This is said to be due to the intention of the creator, ZUN, as the character personalities, designs and settings of each work are not necessarily continuous and are not recognised as part of a series. The production, from the programme to the graphics and BGM, is almost solely the work of Shanghai Alice Phantom Band (i.e. ZUN alone). The BGM in particular is highly regarded, and many arrangements have been made by fans. The story and characters are also popular due to the unique worldview set in the imaginary world of Gensougo, which is based on a Japanese motif, the characters' unusual personalities and settings, and the depth of the backstory, and many derivative works (novels, manga, etc.) have been created.

A raven-tengu girl and newspaper reporter (Bunya) who lives in the mountain of demons. She has lived in Gensougo since before the establishment of the Hakurei Daiyukai, more than 1,000 years ago, when there were demons, and knows the 'sea', which is not present in Gensougo today. She was a raven before she changed into a tengu. She herself is one of the most powerful people in Gensougo, but she never tries to show off her power (this is a characteristic of Tengu, not just her).