there were no further releases from her until april 22, 2009 with her fourth single, "blue sky, true sky" being the first ending theme of the anime adaptation, "tears to tiara". the single charted twice with a peak position at number 75. yūki later joined 9 other female artistes from lantis to perform at the "lantis presents: twilight listening party vol.6" on july 25, 2009. "weeping alone", the second ending theme for "tears to tiara" was released on august 26, 2009. it charted once with the ranking at the 135th place. she released another single, "dominant space", on february 10, 2010 before releasing her second album. the single's title track was used as the second ending theme for the anime adaptation of "tatakau shisho: the book of bantorra". the single only entered the oricon charts once with a peak ranking at number 193. her second album, "eternalize", was released on june 9, 2010. the album reached number 169.