Next week is Eden College's midterms. That week happens to include the new moon, the one day of the month Anya can't use her powers to cheat. But then, Yor suggests that Yuri should be her tutor...

The midterms are over. Loid is nervous about Anya's test scores and heads to Eden College to alter the answers. However, there already seems to be another guy there with the same motive that's making himself insanely suspicious and obvious?!
On the one day each month 
that Mister Moon goes away,
،يختفي السّيّد قمر في يوم واحد من كلّ شهر
Wenn einmal im Monat der Mond weg ist,
El día del mes en que la Luna no se ve.
El día del mes
en el que la luna no se ve
Une fois par mois,
quand la lune disparaît…
Una volta al mese, 
quando la Signora Luna sparisce,
Em cada mês, no único dia em
que a dona Lua vai embora,
Раз в месяц, когда госпожа Луна
 пропадает с неба…