I'm Not a Baby!!!

One day after consecutive overtime shifts, Nadeshiko worries when Akane comes home late as usual. Before Akane can even reply, she collapses at the entrance. Though she wakes up, Akane has regressed to infancy (?) due to exhaustion. Nadeshiko tries every trick in the book to nurse her back to health. Mistaking Nadeshiko for her own mother, Akane starts acting clingy toward her...?