How to read: ひひ
Pronunciation: 
Same names and idioms in reading:
比々 狒々 比比 霏霏 卑鄙
Names and idioms with total stroke of 22:
剛博 穏やか 白野江 笹掛 青江物
Names and idioms similar to 秘扉:
中扉 水秘 扉無 秘密教 鐵扉
Yojijukugo(idioms with 4 Kanji characters) including 秘扉:
奥義秘伝 黙契秘旨 秘中之秘