Tenchi Muyô! GXP

Seina returns home to visit his parents and is met with a feast and festivities that lighten the spirits of the entire group. Amane and Ryoko, however, still seem to be stressed out, as they try to make a good impression on Seina's parents. But all goes well at the Yamada house, and even NB's able to ingratiate himself into the household. Are things actually looking good for Seina? What's waiting around the corner to trip him up?