The opening theme is "Yatte Koi Daisuki" and the ending is "Apple Panic!" , performed by voice actresses Haruka Tomatsu (Lala) and Sayuri Yahagi (Haruna).
For more context on the series' transition into its sequel seasons, you can find further details on the To LOVE-Ru Darkness Official Wiki .
The [61C89AE8] tag in your filename is a CRC32 checksum, commonly used by anime release groups (like "RH") to verify file integrity [No Search Results Needed].
As is typical for the series, this episode features high-stakes comedic mishaps and sci-fi-fueled accidents involving the alien princess Lala and her human fiancé, Rito Yuki.