[m]hi I'm looking for A yaoi manga that has this plot

So the plot is that this middle aged (seme probably an office worker) man has a fuck buddy who loves to play kinky stuff. At first their relationship is just like between one night stands until suddenly the uke (who was quite younger than the seme) was punched or harassed by some of his other f*ck buddies anyways they realized they liked each other then they ended up living together. Until the both of them went shopping and the uke got stabbed by a woman. (Ending the uke died then the seme started hallucinating about the uke)

Oh by the way the manga was quite long.
Please if any of you know the title of this yaoi manga please inform me🙏🏼

Is it Spin Out (Kunieda Saika)?