Sole Salvation (Episode)

Sole Salvation (唯一の救い) is the 15th episode of the 4th season and the 74th episode overall of the Attack on Titan anime, produced by.

Titan Research
''Research concerning the unique power of Subjects of Ymir to become Titans. A field of study since the era of the Eldian Empire, it encompasses not only the biology of Titans themselves, but also the ideologies of Eldians who possess the power and how to deal with them. Though researched extensively over many years, the truth of Titans still remains a mystery.''