Yei Theodora Ozaki 
Old Japan Romances 

His old widowed mother would not die happy unless he were rehabilitated, and to this end he knew that she and his faithful wife, O Yumi, prayed daily before the family shrine.
How often had he racked his brains to find some way by which it were possible to prove his unchanging fidelity to Shusen; for the true big hearted fellow never resented his punishment, but staunchly believed that the ties which bound him to his lord were in no wise annulled by the separation.
At last the long awaited opportunity had come. In obedience to the mandate of the Shogun Ieyasu that the territorial nobles should reside in his newly established capital of Yedo during six months of the year, the Daimio of Tokushima proceeded to Yedo accompanied by a large retinue of samurai, amongst whom were his chief retainers, the rivals Shusen Sakurai and Gunbei Onota.
Like a faithful watchdog, alert and anxious, jurobei had followed Shusen at a distance, unwilling to let him out of his sight at this critical time, for Gunbei Onota was the sworn enemy of Shusen Sakurai. Bitter envy of his rival’s popularity, and especially of his senior rank in the Daimio’s service, had always rankled in the contemptible Gunbei’s mind. For years he had planned to supplant him, and Jurobei knew through traitors that the honest vigilance of his master had recently thwarted Gunbei in some of his base schemes, and that the latter had vowed immediate vengeance.