I Became the Stepmother of an Irrevocable Dark Family - Chapter 27

I wonder how the concept of the time stopping works. Like has his soul stopped ageing since the ‘incident’? In the beginning, he felt like a young boy who’s pretending to be an adult. But after those chest pains, which usually symbolically (and artistically) means the heart or his soul. Were those chest pains similar to the pains of muscle growth? Because he’s experienced a physical growth and not a mental or spiritual growth? Is he returning to his time loop?? Okay, that’s enough philosophy LOL