The 6th episode of Re: Zero season 2 finally included an opening. . Mayu Maeshima performed the opening theme. The title of the theme is ‘LongShot’.

Mayu also performed the songs “Styx Helix” and “Paradisus-Paradoxum” when she was part of the band MTYH & ROAD. Styx Helix is the ending theme for the first half of season 1 of Re: Zero. “Paradisus-Paradoxum” is the opening theme for the second half of season 1.

Anime Corner describes the anime as :

Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he suddenly transports to another world. As he’s lost and confused in a new world where he doesn’t even know left from right. The only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she’s looking for…

Source : Animelody YouTube Channel.