After lots of rounds and his stamina running out Soji is getting anxious waiting for Uchika to return.
He does not know that this is part of the training, the room was set up so that you cannot know how much time passes and also train your willpower by isolating you not knowing when you can stop.
Going for a few more rounds with his exhausted mind and body, Soji persists.
With his tennis bag inside the room with him, he doesn't need to worry about getting hungry with the snacks and he could always refresh his lost fluids with the container full of energy drink.
...
Chapter 12
But as he is getting more and more fatigue his shots and positioning get better, as his body does not want to move he places his shots well so that they bounce on an easy spot.
Continuing for who knows how long he hears the sound of the door opening to reveal a slightly sweaty Uchika.
Panting because of exhaustion Soji stops what he is doing and turns to look.
Seeing his state Uchika tells him to stop and go outside.
Barely able to move his body he carries his tennis bag and water container with him when he leaves the door.
Outside of the wall training room, he sees Aki in a similar condition as him.
Having both of them line up Uchika tells them. " Before we finish today's training I want both of you to do some cool-down exercise."
Spending a few minutes on cooldown exercises to help reduce muscle pain.
"Oh I forgot to tell both of you but OSji will be staying here till the golden week is finish."
Seeing the shock look on their faces she continued. "Your mother has delivered your clothes while you are in isolation."
Aki then remembered that after closing the door on Soji, Uchika checks her phone and gets out saying that she has to get something.
She thought that it is just to get an extra racket which she uses when she gets back to rally with her.
Soji also thought about how her mother acted making sure that he knows he will not have the choice to quit after he agreed to the training.
"So what are they gonna do without me there?" Soji ask
"They said that they will have leave at work use this time for themselves."
"So you have been seen as a trainer and a sitter eh, coach."
Getting his point she feels a little irritated.
"Now that you said it, I feel a little mad now."
"Well it is no use thinking about that now, and since both of you already finish cooling down how about we head to the house and I will ready the bath."
Both of them already carrying their tennis bags to bring back to the house, when suddenly Uchika stops them.
"Wait let us clean this thing first then we are good to go."
After cleaning they both followed Uchika to the house.
The house looks like a very modern two-story house that looks like those from T.V. dramas.
Entering it Uchika guides Shoji to a guest room where she puts his clothes.
"Kindly put your items in here while I go and ready the hot water for the bath. Also, bring your dirty clothes with you when it's your turn since I will have run by the washing machine tomorrow."
Although he will soon take a bath Soji thought that he should at least change his shirt to a clean one before going to the living room.
In the living room, he joins Aki who was watching some sports T.V.
Filling up the bath with hot water Uchika urges Soji to be the first one to use it.
"Soji-kun you can use the first since I still need to prepare dinner. Also, you can use the towel that I put up there it is new."
Hearing that Soji goes to the guest room to get some clothes as it became his habit to bring change in the bathroom so that he won't walk around with just a towel.
Arriving at the bathroom he decided not to use the bath and just instead decide to just have a hot shower.