The treatment for Keiko's father went very smoothly. Chen Yu used a blank soul produced in the Necromantic Space to fill the gaps in his soul, making it whole again.
After such a repair, the new soul needed time to readjust to the body, and this became the course of treatment for Keiko's father.
After prescribing some drugs to aid in neural recovery and advising him of some precautions, Chen Yu left the Regenerative Medicine Laboratory and returned to the hospital.
Back at the hospital, Chen Yu arrived just in time to have lunch with Jounouchi Hiromi.
"My dear husband, you really do have perfect timing! Unfortunately, I didn't make you a lunchbox today, so you'll have to buy a set meal from the cafeteria," Jounouchi Hiromi said with a smile as they went to the cafeteria together.