The Initial Production Limited Edition release of Little Busters!: Refrain Vol. 4 was released on the 23rd of April. It is retailing for 8400 yen for DVD and 9400 yen for Blu-ray. It includes episodes 7 and 8 of the Refrain series, and the unaired episode 4 of the EX series, which concludes Saya’s arc. As with the other limited edition releases, it includes a booklet, the episode 8 creditless OP, and audio commentary. You’ll have to be quick and lucky to find it for sale though, as most import retailers will have already sold out by now!