Tenchi's Mother in the Tenchi Universe Continuity
In the Tenchi Universe continuity, Achika was the daughter of Yosho who married Nobuyuki and died a short time after giving birth to Tenchi. She met Nobuyuki in high school where the both of them began their relationship. Bent on revenge for his defeat by Juraian forces years earlier, the space pirate Kain traveled back in time to the year 1970 to kill Achika before she learned of her Juraian heritage. Instead, Tenchi and the girls manage to go through time and free Achika and Nobuyuki from Kain's grasp. When Kain transforms into his final form, he is able to easily defeat Tenchi and the girls. However, Achika's Jurai energy was powerful enough for her to resist Kain's attacks and use Tenchi's sword to deliver a fatal blow which wiped out most of Kain's body. In a final attempt to kill Achika, Kain tries to latch himself onto her but he gets killed completely by Washu's Dimensional Cannon.
Achika's body can sustain a large amount of Juraian energy which is demonstrated in a few ways on "Tenchi Muyo in Love." Her power was great enough to resist the pain from Kain's attack which he spread onto Tenchi and the girls. Also, when she decided to use Tenchi's sword on Kain, the blade in the sword grew to be about five times the size that could normally be generated by Tenchi which was large enough to cut Kain's final form in half. Such power could have made Achika a legendary Juraian warrior if she didn't die from exhausting most of her energy against Kain which reduced her life span quite dramatically.
Tenchi Muyo in Love!
A Space Pirate wishing to destroy the house of Jurai travels into the past to Kill Tenchi's Mother.