Momentary Lily

This is a bit of a stretch, but stay with me. Both shows come off as far darker than they initially seem, and a more important connection is that both deal with AI in their stories at major points. So while one is a far more action/girl focused show and the other is a more grim drama they both link up in ways that aren't completely obvious. 

Wow, two Studio GoHands shows. Both have very similar animation, if you like this style of animation it's essentially GoHands signature. Outside of this, Momentary Lily is easily the worse sibling of the two, however if you enjoyed Hand Shakers while this isn't exactly the same it has certain similar aspects that will scratch the GoHands itch for you. Action is fairly similar in both in terms of animation as well. 

Honestly I thought of Yuuki Yuuna when I first started watching Momentary Lily Episode 1. It does have similarities such as full female MC's, unique powers from their weapons, Post-Apocalyptic, as well as a certain cheerful character. Both also offer a fair bit of :EmotionalDamage:. 

They're both very similar in the "Cute Girls + Supernatural + Shitty/Questionable Animation + Esoteric Plot" genre. It's a fun time if you have tolerance for questionable animation quality.