When was the Heian period?
The WaniKani forums don't have any trolls, so it gives me peace of mind.
Walking through the old growth forests in British Columbia was so peaceful.
Something is flat and relaxed. That is you. What words does that describe? To me, that would be peace and tranquility. Just imagine something that is flat and relaxed, like a field of grass with happy people in it. It's so peaceful! It's so tranquil!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.