So, Arches.
A "Sequel" to Echo but not really, sure characters appeared in both and they deal with similar things but Arches is it's own beast. Cameron and Devon story and by consequence Artie too is a interesting sequel to what Echo already offered, both of them deal with supernatural entities and substance use, how carelessness even in moments you don't think much could harm you.
Arches don't live into Echo's shadow it tries and succeeds in making it's own dram and it's own version of things, it's more brutal then Echo and I will have to say if you had any kind of past with the themes touched in this VN you will empatize with them way more. Overall I think Arches is a fantastic experience one that is worth is it's time, is not that super long but not short either is enjoyable ride.