(Hideki contemplates whether to buy a book for Chi or buy the dictionary he needs.)
Hideki: Picture books cost this much? No, but if I buy this, the dictionary... (looks at Chi) But the dictionary... the mock exam... (looks at Chi again and sighs and hands her the book) It's a present.
Also called 'Chii Discovers.'
This is the first episode where the beginning of the picture book series appear. These become important as the series progresses.
This marks the first instance of Chi's lost data trying to emerge. In the credits, she is called Dark Chi or Atashi.