Lena's Pichu is often seen outside of its Poké Ball, resting in
Lyn's pochette.
Lena entrusted Pichu to her yougner sister
Lyn.
While talking to an acquaintance, her younger sister
Lyn went looking for Pichu who was in a pochette that got mixed up with
Bonnie's pochette at the Pokémon Center.
Lyn feared her sister
Lena would be mad. Pichu was reunited with the help of
Clemont and his friends who were also looking for
Lyn and
Lena.