Episode Title: Tio's Spirit. The One And Only Partner. When Wounds Heal.

Description: Megumi asks Kiyo to babysit Tia while she goes on a circumnavigational tour. After a fun-filled day, Tia and Zatch turn in for the evening. In bed, Zatch asks why Tia is so spirited, and she gives an emotional story about her coming to Earth from the Mamodo world. After escaping Maruss' assault, she fell into the bay and soon washed ashore, interrupting Megumi's photo shoot. Megumi took her to the local hospital and periodically checked on her. The experiences had made Tia downtrodden and detached, having closed herself off everyone else to avoid a recurrent feeling of betrayal. However, once Maruss located and confronted Tia, Megumi stood up for her, thus helping her begin to mend her internal scars. This is expedited when Tia's spellbook shone brightly to portend that Megumi is her bookowner. The two managed to evade Maruss, and continued to do so until their first encounter with Kiyo and Zatch, both whom Tia also credits for becoming more outwardly to others. When she finishes her story, Zatch has already fallen asleep.

Zatch Bell Season 3 Episode 19