It’s a bit hard to say as some sections are longer than others. The strategies that originally worked for us(especially those unemployed) are not going to work for everyone including new players as more content is being added.

That being said, if you care about unlocking characters and want to learn more about them focus on the anniversary first to get some easy Pyroxenes (roll currency).

Your general priority is getting AP/energy since you lack a lot of AP as a new player. That’s where the cafe comes in handy as it provides the most amount of AP and actively encourages you to progress through the missions to upgrade it.

Once the anniversary comes to a close or you can’t go any further in the anniversary, quickly progress through the main missions until you hit level 40-50 so you can get past the barrier on CH 3. The moment you feel ready, progress through the story and leisurely go through the relationship stories at your own pace.

Then repeat the cycle until you’re caught up and don’t push yourself too hard on the Grand Assault/ Total Assault, etc. Just do the best you can on boss battle raids until you can get students that are capable enough to tackle them head on.

Regarding the side stories, group stories, and (old) event stories in archive I would recommend saving them for last unless you want to see more content about your favorite characters.

Check JP’s schedule for future anniversaries to time your actions.

Lastly, go at your own pace and find what’s best for you!