can someone with a good memory tell me the name of this mom ntr series that i remember?

basically, in it a husband is cucked by his boss (i think?) who fucks his wife, and then the husband dies

then, the boss shows the son footage of his cuck dad and then later the son walks in to the boss and the mom fucking, and the mom is shocked and then says "[son's name]-chan, you look just like your father."