[Pachael]

Originally Posted by Fandal

In Vol2 of the manga....

Spoiler:

There's a particular where Yui is sleeping in bed and her sister goes look at her and then goes away. Later on, the group was playing and then everyone saw Yui. A few moments later, her sister appeared out of nowhere in the clubroom. Later on, Yui is in bed - I think sick. What's going on here?

Spoiler for vol2:

The girls are preparing to perform at their 2nd cultural festival, but Yui catches a cold. Yui manfully tries her hardest to get back on her feet and practise with the others, but fails miserably (too sick to even start the song on time with the others). The others nominate Azusa to be her replacement, Yui's reluctant to relinquish her spot but is ultimately dragged back home by Ui.