It's so funny, Katsura Airi really went all out in the smear Fumi campaign route so all her bridges burned on the way out, Sakura really got rewarded for her string of mistakes for years in-universe, only for Fuimi to randomly decide to come clean about what happened all those years ago, by withholding a few things no less, when the accountability widow closed down a long time ago.
Shinobu and Sakura end this tale not necessarily back together, but tied in a special way where they believe only each other bring out the best in their respective careers, Katsura Airi must've thought she was being deep with this, the final pages with Shinobu and Sakura holding hands as he films her being rear ended by another actor really seals the deal this is "netorare comedy", no romance to be found.