DESCRIPTION
After getting so sure about the underwater tunnel she and Sensei had to go through in a mission, Saki guided Sensei through it. After that, she went through it just fine... until the tunnel closed! It's a detail that she missed in her research about it. She got out of the tunnel, but the gate managed to grab a part of her wetsuit. A struggle wasn't able to get her free, instead just making her lose more air. Eventually, the elite student had to take off her wetsuit in shame, as she didn't manage to finish the mission she called "easy-peasy" perfectly...