Characters Reachable to LR6 with Only Permanent SRs

Assuming Natasha and Lunarynd, who are difficult to ascend, cannot reach LR5, Cordy, Merlin, Meltyu, Moza, Amleth, Sabrina, Amor, Ivy, Nina, Freesia, Lynn, Dian, Mimi, Hathor Amleth can be further upgraded if Fear is set to LR5. Above LR5, you need 4 copies of the same character, and the stat increase is only a few percent, making it cost-inefficient. So, it's an option to use leftover SRs as materials instead of saving them for LR6 (though you'd likely have plenty of R materials by then...). For now... LR7 and above require limited characters to be LR5, which has a very high hurdle, so you might only need to collect 240 shards and can use the rest.