This is the best! I love everything about this srsly. How they started off as enemies, how BDSM has a huge impact in character development and how cute the characters themselves are.
The scene I enjoyed most is when Yukino drank all of her cum earnestly. I demand a sequel even though the story itself is complete.

This is very cute and the expression of Rikka in last chapter is so good. Though this could’ve been way better if things turned out like this: As soon as Rikka passed out, she’s been chained on bed with no way to escape. Day after day, Rikka gets raped ceaselessly till her mind is broken. On daytime, after being released, she acts like nothing has happened when she went missing. By the nighttime or whenever they’re alone, Rikka can’t help but beg Alice for pleasure.