"A Sour Operation?" is the first section of the fourth episode of the Sakura Trick anime series.
|A Sour Operation?|
|Japanese||January 30, 2014|
|A Sour Operation?||Is This a Test of Courage!?|
|The President is My Sister||Let's Have Tea With Big Sis|
|A Pool Cleaning Promise||The Witch, The Apple, and The Big Sister|
Suspicious about the relationship between Haruka and Yuu, Mitsuki asks their classmates, Yuzu Iizuka and Kaede Ikeno, to keep an eye on them and make notes any suspicious behaviour.