October 12th 2020: Izumo Inn, bathroom, 17:45:12
Musubi had been having a fever the past few days, and figured that she should have a nice, hot bath to help clear it out. She had also had headaches and had broken out in cold sweats for the same few days. She had gotten into a fight with another Sekirei, a rather strange one with the biggest set of breasts anyone had ever seen, even bigger than Kazehana's, and hers were huge, mind you. She had fallen asleep in during her bath, and did not notice that something was happeneing to her. Her breasts, already about the size of volley balls, were getting larger. Slowly but surely, they swelled and mushroomed into foot-around spheres on her chest, and kept swelling.
In half an hour, she woke up, and looked around, not noticing her growth yet. She got up, and looked in the mirror, only to find a surprise. She looked as her new, large, spherical boobs bounced and wobbled. Each one was very perky, and didn't even sag anywhere. Perfectly spherical, each one had to be two feet in diameter. Someone knocked on the door, it was Minato, and he said, "Musubi, are you okay? You've been in there a long time, and Miya asked me to check up on you." She lied, saying, "Yeah, Minato! Just fine, dandy!" He said, "Alright, but just don't dawdle, Tsukiumi's sure to have a fit if she doesn't have a bath tonight. I'll just tell her you're just a little delayed." "Okay!"
Musubi tied a towel around her big, bare bosom, and another around her waist. She ran to her room as fast as she could, her burgeoning bosom bouncing all the way. Tsukiumi, on her way to take a bath herself, caught a small glimpse of Musubi's now huge bosom, but shook it off, thinking she was seeing things, and went off back to going to the bathroom. Musubi, in her room, had not noticed that her boobs had grown another foot around during the run, now three feet around, and she turned around, still looking at the reflection in the mirror. She took a moment to admire herself, but then got into her dress, which now showed her colossal cleavage due to the massive rip in the front of it.