Danzo is just another power-stealer (not as bad as being spoon-fed at all though). Shisui didn't even remotely expect a forbidden Uchiha Clan jutsu. Some people are too simple to actually look into the fight and realize what the OP said because they're bandwagoners. I bet 70% of the people who say "Damn Shisui got prison-raped by an old man!" didn't even realize that Danzo used Izanagi. *smh*
Everyone realized Danzo used Izanagi :|
But he still ass-raped and humiliated shishui. Did Kakashi expect Tsukuyomi? No. But he got raped by it. Did Orochimaru expect totsuka? No. but he got raped by it. Did kabuto expect izanami? No but he got raped by it. Did sasuke expect danzo's izanagi? No, but he didn't get negged out. Did Minato expect obito's intangibility and ST? No, yet he won.
Only Shishui fanboys are complaining right now. Being a ninja is about stealth. You don't go shouting out your moves or making your presence known. Stay hidden and strike when the moment is right; That's one of the first things this series taught us. Why in the **** would danzo make shishui know about his techs? Please to god tell me? Only a complete dumbass informs his opponents about his techs. Danzo was smart.
He looked shishui directly in his eyes to make shishui believe he had a victory; But danzo already knew he had a sharingan and izanagi activated so he proceeded to prison rape shishui after he dropped his guard, like a complete amateur. Shishui got negged. Shishui lost. If he won, no one would be complaining; Deal with it. His hype was shattered with one arm.
PS: you don't need to be danzo bangwagoner to like a good prison rape. Simple minded excuse by simple minded fanboys who couldn't accept one of their faves were put into the dirt. It doesn't matter wtf he's done in the show, or how bad he is, danzo still laid shishui out. Respect to him.