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..
To be honest, it was all futile the moment 
Seto-sama set eyes on her.
بصراحة، كان ذلك كلّه بلا جدوى حالما
وضع سيتو-ساما نصب عينيه عليها
Wobei es eh keine andere Wahl gab,
seit Seto-sama sie ins Auge gefasst hatte.
Aunque es inútil resistirse ante Seto.
Aunque es inútil resistirse ante Seto.
Comme Mme Seto l’apprécie,
ça ne servait à rien de résister.
A essere onesta, è diventato tutto inutile 
nel momento in cui Seto-sama ha messo gli occhi su di lei.
Bem, era um esforço inútil, desde que
a Princesa Seto colocou os olhos nela.
Хотя всё это стало глупостью с того
момента, как Сето положила на него глаз.