4.5 near 5. I cant give 5 stars bcs Jin (Kakami's older brother) had to marry and have a son to continue the lineage. Let me explain better. Jin and Ei meet when they are 10. Jin is in his grandfather's castle and Ei is there bcs his father works for Jin's family. They become friends, and with the time (off-screen but explained), they fall in love. The sad thing is that Jin must continue his lineage (leopard is rare), and so he must get married and have a son (i love his son Rio but am sad the same for Ei). The night before the wedding, with a woman he doesnt even know, he asks(orders) Ei, that is his secretary(servant) now, to have sex with him. The day after, he gets married, and also if he loves Ei, he must be with his wife. Ei and Jin are always together for the next 13 years, and we see Jin having Rio, and in the end divorcing his wife. Jin still loves Ei and the feeling is mutual. Jin cant be like his younger brother, who lives with an house cat and doesnt have any intention of having kids (Shingo/Kakami). Jin cant understand why, till one day he does. While talking with Ei, the other man tells him his parents ask him too, to marry and have a kid. Jin is shocked and cant think about someone else having Ei, but he cant say anything. In the end luckly Ei, doesnt want to get married or have children (he only wishes that Jin could get pregnant) and Jin understands, that also if he is happy about having had Rio, what he did was wrong and he made Ei suffer for all this time. They have sex , and after 13 years, Jin understands what he should have done.
I wanna read what happens next, this is a good story, am sad that Jin had to be with that woman, the day after he had made love to the only person he really loved. For this 4.5 and not 5.