The tale begins around the end of the 3rd season...

Even with Nobuyuki and Rea's wedding coming up in a few days, the Masaki household, though busy with
preparations for the wedding, their everyday situation is still par for the course for the Masaki house.
In space too, people connected to the Masaki house are making preparations in order to attend the wedding.
Airi is battling mountains of paperwork, and Funaho, who can't attend the wedding because the survival of
Yosho hasn't been made public, gives her wedding gift to Minaho.
A few days before the wedding, people connected to the Masaki house gather on earth and Tenchi meets his aunt Minaho.
"...she reminds me of mom..." that's Tenchi's first impression, quite natural as she's also Airi's daughter.
The scent of trouble is in the air..
Mikami-sama, you're the one who 
will have to fix her mess later,
ميكامي-ساما، أنتِ من سيترتّب عليها
،تنظيف مُخلّفاتها لاحقاً
Aber am Ende müssen Sie
ihre Fehler doch ausbügeln.
La que tiene que arreglar
sus problemas eres tú.
La que tiene que arreglar
sus problemas eres tú.
Ce sera à vous de le faire
quand vous serez promue,
Mikami-sama, tu sei comunque la persona 
che dovrà sistemare i suoi casini,
Mikado, quem vai ter que consertar os
problemas dela depois vai ser você.
Миками, вам же самой потом
за ней подчищать.