Haksaw has good advice there- for a beginner you should focus on using your EE to research then build a 5EE commander, which can be doable by day 12-15. For your first few days, you have two priorities during battles:
1-Get each revealed heroine to 200 trauma, which will get you 1 EE per day.
2-Reveal the 3 heroines ASAP. This requires you to prolong battles as much as possible, by using tactics (attack/slime etc) to build up surrounds then only using those surrounds the round before the battle would otherwise finish.
That's optimal play, it won't make a huge difference if you can't, for example, do enough damage to the third heroine when she first shows up. But following this generally will get you to earning 3EE/d as quickly as possible. Then it's a question of patience, where you save EE and just add trauma to each heroine. It's normal to feel you're wasting time waiting and in later tries you can streamline the process with your better skills.
1-Get each revealed heroine to 200 trauma, which will get you 1 EE per day.
2-Reveal the 3 heroines ASAP. This requires you to prolong battles as much as possible, by using tactics (attack/slime etc) to build up surrounds then only using those surrounds the round before the battle would otherwise finish.
That's optimal play, it won't make a huge difference if you can't, for example, do enough damage to the third heroine when she first shows up. But following this generally will get you to earning 3EE/d as quickly as possible. Then it's a question of patience, where you save EE and just add trauma to each heroine. It's normal to feel you're wasting time waiting and in later tries you can streamline the process with your better skills.