That day, izuna heard that some of Uchiha clan's members managed to defeat Tobirama and take him hostage. When he finally found out that where tobirama was he quickly went to there just to see Madara torturing Tobirama who was tied up and on his knees just to get important information about senju's clan. From the way tobirama looked, izuna could say that he didn't say a word till now. It was wired but, seeing tobirama in that state...made him feel something weird in his chest, he didn't know what was it.