@v. College students usually graduates at the age of 22, so unless he's a college repeat, she should be around 20 to 22. Mirae is abt 31, they mentioned it earlier

Their*

I noticed there were also medicine capsules, which proves my point abt him eating anything and its taste not having any distinction from one another.

@Lonlie Ghost There may not be a deeper meaning to it except he can't taste food so even if he ate anything that will taste bad to us, he won't be able to notice it. And plastic objects like legos/building blocks are also generally notorious for being a problem to any living being that eats. (e.g. babies and kids accidentally eating their plastic toys, marine animals like turtles eating plastic because they thought it was a jellyfish, etc.)