Complex sentence: For the second season, the opening theme is by Iguchi, Asumi, Yōko Hikasa, and Yui Ogura, whilst the ending theme is "Tinkling Smile" by Ogura.
Split into simpler sentences: For the second season, the opening theme is by Iguchi, Asumi, Yōko Hikasa, and Yui Ogura,. The second season's ending theme is "Tinkling Smile" by Ogura.