What happens to Ichika after the fated summer ends? In the final episode,


   Ichika is shown at the end of the finished movie wearing the clothes Nanami brought from Bolivia, so it is inferred that she somehow returned to Earth after being abducted by the unmanned probes from the Federation search party.


So my question is not about this particular part of the ending.

Is there any official material (manga, OVA, ONA, etc.) that tells how it came to that ending?


   How did she return to Earth?
at the end of the last episode kaito's sister returns and brings a Bolivian sweater for ichika but kaito tell her she had to return to to her own country as her transfer had ended we then see remon at mib headquarters with the plans for the interstellar ship and rinon is there with her if you watch till the end of the credits,one year later some students are watching the old class members student film and it shows ichika wearing the Bolivian sweater with some revealing dialog.