Sesia has a friends-with-benefits partner, though their relationship isn't truly equal.
Or rather, she was forced to become Killua's partner.
Please note before reading: Killua is an adult who grew up in the Zoldyck family and never took part in the main plot. His personality is intensely domineering and obsessive, and differs significantly from the Killua in the original work.
Coercive love
I can't post the complete story here. For details, see my Weibo: @DeepMountainWildWood
Theme: Sleeping with Killua
