http://www.dlsite.com/maniax/work/=/product_id/RJ121440.html

http://www.dlsite.com/ecchi-eng/work/=/product_id/RE121440.html
(English version)

The human commander has been killed by the foe alien in base.
Then there are miserable tortures at ultra-girl.
She almost dead in the end.
But the female commander found the dying ultra-girl
and let her absorbing solar energy.
(like superman does.)

She will wake up in next time.