Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_13 (oricon VARCHAR, romaji_title VARCHAR)
### Question:
How many oricon's have a romaji title of rakuen -memorial tracks- (maxi-single)?
### Answer:
SELECT COUNT(oricon) FROM table_name_13 WHERE romaji_title = "rakuen -memorial tracks- (maxi-single)"