Mochizuki Seitaro once exuded passion as a pyrotechnist; however, one year after season one's end (after the finale) his enthusiasm had dissipated significantly - to such an extent that he no longer leaves his house very often and appears more reclusive than before. Additionally, his family-run fireworks store remains open but may go out of business altogether.
Mizumori Hikari works part-time as a pyrotechnist at another fireworks store; Wataru and Seitaro find themselves engaged in their first quarrel for some time - until Fumiko Noguchi visits and offers to be Seitaro's apprentice and proposes living under one roof with him, Mizumori Hikari, Fumika and Wataru all being brought under its roof as their friends live nearby....
