宇
eaves, roof, house, heaven
On'yomi: ウ (u)
Stroke order
宙
mid-air, air, space, sky, memorization, interval of time
On'yomi: チュウ (chuu)
Stroke order
学
study, learning, science
On'yomi: ガク (gaku)
Kun'yomi: まな.ぶ (mana.bu)
Stroke order