In contemporary Japanese slang, a is a student who has graduated from middle school or high school but has failed to achieve admission to a desired school or even any school at the next level, and consequently is studying outside of the school system for admission in the next year. Rà Ânin may study at a yobikà Â. The equivalent term in Korean education is jaesusaeng.
The term rà Ânin is colloquial while the word is more formal. The term derives from their having no school to attend, as a rà Ânin, a masterless samurai, had no leader to serve.
Now adapted into contemporary Japanese slang, a is a student who has graduated from middle school or high school but has failed to achieve admission to a desired school or even any school at the next level, and consequently is studying outside of the school system for admission in the next year.
Rà Ânin may study at a yobikà  or other shadow or supplementary education institutions to aid their studying when retaking their admission examinations.
Sometimes, the terms , , or are used for students who failed exams twice.
Society in Japan has developed to value social status, and changes in social status are believed to only be possible through the attendance of prestigious universities, such as the University of Tokyo and Kyoto University. The large number of individuals opting to become rà Ânin reflects their desire to enhance their chances of gaining admission to such prestigious institutions. This additional study period enables rà Ânin to meet societal and parental expectations related to educational achievement.
Parental pressure plays a large part in influencing the need for academic success in Japanese students, since they want their children to succeed. This led to students becoming rà Ânin and attending shadow or supplementary education institutions like yobikà  in order to improve their chances of attending prestigious universities. Students usually choose to become rà Ânin based on the expectations placed on them by their parents and greater society. A rà Ânin may also be influenced to choose this path because of the economic benefits that having a prestigious education will grant them later on.
The Japanese education system is very competitive due to the existence of rà Ânin, and the entrance exams to enter these universities are rigorous. There is now a concept called 'examination hell' which refers to the period when rà Ânin undergo intense periods of studying in preparation for university entrance exams. Being a rà Ânin for too long has negative impacts, specifically regarding social expectations on the appropriate age to finalize your education and begin to enter the workforce.
RÃ Ânin significantly influence the quality of education and universities in Japan. Their rigorous preparation not only enhances their personal academic performance and prospects of attending prestigious universities but also raises the average academic standards among all applicants. This elevation in applicants' academic standards boosts the reputation of each university, thereby increasing the overall appeal and competitiveness of higher education in Japan.
RÃ Ânin who studied more are also more likely to have increased their academic knowledge, so those attending these universities are at a higher educational standard than previously.
However, eventually the benefits to being a rà Ânin end. This is because there is only so much preparation to be done prior to entrance exams, even with shadow education.
A large majority of rà Ânin participate in supplementary education in order to benefit their studying and preparation for entrance exams. These institutions have been found to disproportionately benefit higher socioeconomic class students for many reasons. One is that access to these institutions is limited to those with the financial resources to access them. Graduates from upper-class high schools also tend to choose becoming rà Ânin rather than enter less prestigious universities since they know they will have the support of supplementary education to guide their studies.
There are higher rates of rà Ânin from upper-class high schools for this reason and since their families have better access to information about supplementary education options. Rà Ânin from different socioeconomic classes have similar opinions on what the negatives of being rà Ânin are, but differ greatly on the positive aspects as a result of the opportunities higher-class rà Ânin know they will be able to access for support.
(In this table, the high schools are labeled A through E based on prestige, with A being highest and E being lowest)
This table shows how many rà Ânin from five different high schools in Japan attended different ranks of supplementary education classes in a yobikà Â. The data collected shows that the higher the prestige of high school, which is typically attended by the upper-class, had more attendance in higher ranked supplementary education classes.
Rà Ânin appear frequently in fiction and Japanese popular culture. As an example, the manga and anime series Love Hina features three main characters, Keitaro Urashima, Naru Narusegawa, and Mutsumi Otohime, who are described as rà Ânin throughout most of the series. In the manga and anime series Chobits, the protagonist, Hideki Motosuwa, is a rà Ânin studying at a preparatory school to get into college. Maison Ikkoku also features a rà Ânin as its main character; the series centers around his studying for exams as he is distracted by others that he lives with. The protagonist of Sekirei, Minato Sahashi, is also a rà Ânin. Kanamemos Hinata Azuma is a rà Ânin as well due to her love of gambling and money making, activities which hinder her studies.