Hotaru no Hikari: It's Only a Little Light in My Life

Set two years after "Hotaru no Hikari 2" drama series, Hotaru Amemiya learns that her manager (and now husband) Seichi Takano has a dream of vacationing with his loved one in Rome, Italy. Hotaru then plans for a trip to Rome.
(Source: AsianWiki)
~~ Adapted from the manga series "Hotaru no Hikari" (ホタルノヒカリ) by Hiura Satoru (ひうらさとる).