If you want here are some nsfw liech hcs ive seen while on tumblr, and like maybe you can get some ideas from them or just comment what you think about them
1) Liech can actually be a dom and a bit of a sadist in sexual contexts, pins her brother to the bed and makes it clear what she wants even if it means biting him, that kind of thing
2) She has a size kink, both in finding a size diffrence between her and her partner hot, and also just liking the big a lot to strech her
3) She's big into both romantic and dirty talk, espically in older more formal ways
4) Kind of opposite to number 1 but she enjoys overstimulation and being in bondage, just in a "Don't treat me like a delicate flower but a woman" kind of way
Also kinda a hc kinda not but i have seen seyliechice as a poly couple having a threesome once