Your personal Tumblr journey starts here
With the upcoming prsk collab, I'm sure it's attracting people genuinely interested in learning Enstars lore. (Or if you're someone who's been playing Enstars but hasn't been engaging in the lore) In that case, do NOT start with the Reminiscence series, but instead, I highly recommend to read the Main Story first before anything else. You can read it through the English server, BUT if you want to know the very start of Enstars lore, read Basic/! era Main Story. (However, the unfortunate side is that Enstars doesn't really allow fan translations...)
You'd see people recommending stories from the Reminiscence series (Checkmate, Crossroad, Element, Marionette, Meteor Impact, Obligatto, etc.), but I highly advise to NOT read them if it's your first time learning Enstars lore — this was my mistake when I was a new fan lol. But if you do already know tidbits about Trickstar and Jin & Akiomi, then I do recommend reading their Reminiscence stories, which are Rocket Start and Guilty of Perjury respectively since it mainly tells their formation and initial dynamic with each other. The other Reminiscence stories I mentioned deal with heavy topics and require knowledge from ! era Main Story, so I really advise reading those first. It would give you a wrong impression of the characters (which is why I didn't like Shu and Eichi when I was new because my introduction to them was through Marionette💔 I'm a big ValkyrieP now though and i also love fine!)