Spoilers ??
He is not a kid.
THE BEAST EMPIRE EXISTED LONG BEFORE, WHEN THE BEAST KING AND QUEEN WAS ATTACKED BY THE EMPIRE AND THEIR MAGES THE QUEEN WAS PREGNANT RIGHT? so she was sold and raised Javi in the slave center,that was way long ago,it was the reason the mage tower was locked with such restrictions so it was long ago before FL was born so even though Javi appears like a young boy because he didn't receive the stimuli to come out of the cocoon of his young self because of his mother's death and malnourished, but now that the beasts are recuperating and regaining strength and he has a purpose in life,which is FL, since she saved him from the slave traders Javi awakened,so Javi is actually older than FL in terms of age.
Why was she saying goodbye??
Coming of age ceremony was the last event that took place before the story ended in the story mode, killing the real penelope afterwards. Her not achieving to fill up any romantic candidates love guage percentage before this event takes place means she failed. She also has a poison, you connect the dots
I think 105 is meant to be 104