Doesn't "Going out with a bang" usually mean that you are finished?


Worst case scenario:

She comes back in 3 years and formally announces her retirement after the birth of her second child.
Even though she said she would come back in 2-5 years she announces to her fans that she just didn't have the heart to tell them the truth.

Best case scenario:

2-5 years

She's takes a break to write all new music and grow as a person on her own terms without deadlines and time limits from the record label.
She releases a new album and it's so awesome and amazing that even her most hardcore fans will not believe their ears.
Her 4 year old daughter can be heard singing back up vocals on 1 of the tracks, a sequel to Boku wa Kuma.

Hikki releases 4 more albums in the next 11 years and formally retires in 2021.

2026

Baby Hikki is grown up now and she releases a bilingual album in Japan and US, it becomes a huge hit in the States and Japan and she becomes the first Asian to brekthrough in the US.
Her music is a mix of ethereal pop, industrial heavy metal and traditional Japanese enka.

The rest is history.