Final answer:
Obasan's presence in Naomi's house brings both comfort and underlying tension, reflecting the complex interplay between a seemingly serene atmosphere and the chaotic history the family has endured.
Step-by-step explanation:
The contradiction between Obasan's presence and the atmosphere of Naomi's house is quite striking and revolves around one's interpretation of Obasan's influence. While Obasan may bring a sense of comfort due to her familiar and caring presence, there's an underlying tension that arises from the complex history and memories she represents. The atmosphere of Naomi's house could be considered serene due to the day-to-day calm, but it's also underlain by a chaotic past and the disruption of their life due to internment during wartime. Obasan herself is a symbol of stability, but the serenity is superficial, masking the turmoil beneath, manifested in the silent struggles and unsaid tension between family members about their past experiences and current situation.