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..
I guess she'd ignored a bunch 
of important documents again.
أعتقد تجاهلَتْ مجموعة من المستندات المهمّة ثانية
Sicherlich hat sie wieder ’nen Stapel
wichtiger Dokumente liegenlassen.
Debió dejar papeles importantes
sin mirar, ¿no?
Debió dejar papeles importantes
sin mirar, ¿no?
De nombreux documents importants
vont sûrement être mis de côté…
Mi sa che ha di nuovo ignorato 
un bel po' di documenti importanti.
Eu acho que ela ignorou vários
documentos importantes de novo.
Видимо, она снова отложила
кучу важных документов.