I am also listing the English Advanced Edition of Sirius. Please inquire about a set discount. I will erase any writing done with Frixion pens before sending. There is no writing in the answers, but there is a name written in Roman letters on the spine. Sirius 21 Vol. 3, a Japanese language learning book specializing in mathematics. - Series Name: Sirius 21 - Volume: Vol. 3 - Language: Japanese - Content: Mathematics Thank you for viewing.