A few days later...
In Jin's Pocket Dimension, Jin and Serenity is taking a break on their couch after finishing their trainings for the day.
Jin: "Hey."
Serenity: "Yes, Creator?" she responds unexpressively.
Jin: "Your name is a tad bit long to say, are you fine with that?" he asked Serenity about how long her name he gave was, since he came up with it on the spot, he wasn't sure she'd like it.
Serenity: "I'm fine with any name the Creator gives me. But if you want, you can shorten the it." She suggested.
Jin: "Well then, if it's like that, I've got an idea! Instead of shortening your name, I'll give you a nickname, how does that sound?" He says ,hoping for her to agree to the idea,
which she just nods to.
A name immediately comes to mind,
Jin: "Then your nickname will be... Serina!"
Serenity: "That's only one syllable less, and isn't that more like shortening the name rather than a nickname?" She responds with a cold yet confused tone, trying to know if her name got shortened or if she got a nickname.
Jin: "Tsk tsk." he waves his finger around.
"While yes it seems like it just got shortened, it's also a nickname at the same time."
Serenity: "So.. both?"
Jin: "Yep, so from now on, you will also be refered to as Serina, understood?♪" Jin said joyfully, his legs swinging back and forth, arms behind his head.
Serina: "Understood."
After that, Jin has started calling her "Serina"
Jin: "Oh hey just noticed, the goop from your eyes is almost gone huh? Must be nearly fully stable now."
Serina: "Yes, it's all thanks to the training I had with Creator Jin."
The two of them continued having peaceful conversations like this and continued their day to day life.. constantly training each day.