Believe it or not, Nobunaga was human and did show his soft side at times. The most famous and well known incident is letter to Hideyoshi's wife, Ne-Ne. This was written around 1576 0r 1577. Nobunaga showed some sympathy and tried to cheer her up.
Text is from Berry's Hideyoshi, pp. 56-57
"Your recent journey here [to Azuchi] for the first time and your visit with me were felicitous events. I cannot exhaust mu brush or my eyes [in appreciation of] the great beauty of the gifts [you brought]. Although I thought I might send something in gratitude, I have given up the idea at the present as I can make no fitting return for the pleasant things I have received from you. When we meet again i shall present something. I particularly looked with admiration upon your features and your appearance which seemed doubly [beautiful] since we last met. That Tokichiro [Hideyoshi] is said to be ceaselessly dissatisfied is a great wrong, beyond words. However far he searches, this bald rat will never find again anyone like yourself. Thus from now on be steadfast, become strong as a wife, and do not give in to jealousy. It is best, in your role as a woman, to leave some things unsaid. Please show this letter to Hashiba [Hideyoshi]."
It is rare to find a letter with such concern since most of the surviving letters from Nobunaga are business like.
Nobunaga Rex! (latin for king) Nobunaga no tame!