That Time I Got Reincarnated as a Slime Movie, เกิดใหม่ทั้งทีก็เป็นสไลม์ไปซะแล้ว เดอะมูฟวี่, Lúc đó tôi đã chuyển sinh thành Slime: Mối Liên Kết Đỏ Thẫm
A long-running conspiracy is swirling over a mysterious power known as “Queen” in Raja, a small country west of Tempest. When a slime who evolved into a Demon Lord named Rimuru Tempest crosses paths with Hiiro, a survivor of the Ogre race, an incredible adventure packed with new characters begins. The power of bonds will be put to the test!
(Source: Crunchyroll)