The site with an article on the series, brief though it may be.
Official Site
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in the last couple of years, Kajishima-sensei kept hinting at something else coming down the pipe. He teased us with the -If- doujinshi titles, which depict in color storyboard fashion events happening to Tenchi and his harem after they start having children, and even included moments for Seina (Tenchi Muyo! GXP) and his harem’s children. It was only then that I even began to consider that we might get a 4th OVA series, but even then, I erred on the side of caution and figured that things probably wouldn’t pan out. Thankfully, they have.
Official Site
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