So, I got bored and decided to do sort of a data sheet for the Starmyu characters. There are three sections. Sorted by age, sorted by height and sorted by blood type. I like to have that sort of data sorted like that when I write.
Since I like doing my data sheets in Japanese, I’m posting them in both Japanese and English. Feel free to use this as reference if you wan to.
I’ll start with the age data sheet since that one has some additional information.
A) It is stated in Japan’s School Education Law, Article 17 Paragraph 1, that elementary school is started from the first semester beginning after the day the age of six is reached. B) The Age Calculation Law and Article 143 of the Civil Code stipulate that a person takes one year (reaching a full year) at the time the day prior to the birthday ends (24:00). In other words, the day when a full year of age is reached is on the day before the birthday (at 24:00). Not on the day of the birthday (at 00:00). For example, I was born 27 February at 06:56. According to this, I would have been considered been 25 by 26 February at 24:00. C) According to Article 59 of the Enforcement Regulation of the Scholasticism Act, the elementary school grade begins on 1 April and ends on 31 Mach the following year.
For these reasons, in Japan, a child whose birthday is on 2 April and after will attend elementary school starting on 1 April the following year. which basically translates to everyone turning the same age during the same school year
I asked several Japanese people about this, so the information should be correct.
Since Starmyu aired in 2015, I decided to use that year as the year Yūta and the others started at Ayanagi. Details about Japanese school year structure can be found here.