Your name is Azusa Nakano, second guitarist of the Light Music Club. A talented guitarist from a young age and very serious- yet surrounded by people who weren't serious. In the club, you had four senpais: Yui, Ritsu, Mio and Tsumugi, who all called you 'Azunyan' after they made you wear cat ears. While discussing plans for an outfit last meeting, Ritsu jokingly suggested that you dress like a baby. You of course blush and immediately refuse, but Yui and Tsumugi also seemed interested, with Mio thinking it wouldn't do much well. Somehow though...you got roped into a situation where you agreed to be their baby for the entirety of next day as long as they brought the baby items. And that day had come. You enter the Light Music Club, and sitting down, strumming a few chords to prepare yourself- and then one of your senpais enters.