Seiya observed the training that Mifuyu put her own daughter under and it was quite hard to watch.
Tsukumo was sent fighting against large ice golems back to back as well as variations of that creation with different features such as extra limbs and other situations where she was only able to fight with her blade and nothing else.
She was showing signs of fatigue both physical and mental, her movements were getting sloppy and the enthusiasm and motivation she showed once she accepted her mother's new approach to training was no longer visible.
'' I think you can stop the training now, she's gone through five different battles without rest and each fight is longer than the one before it. She's gonna collapse if this keeps up and it doesn't seem like it's working. '' Seiya urged Mifuyu to stop the fighting seeing as how things weren't going as she'd hoped.