Ripen
Mature, Ripeness, Maturity
noun, verbal noun, の adjective
せいじゅく
熟れる (うれる) To Ripen
成熟 (せいじゅく) Ripen, Mature, Ripeness, Maturity
青い (あおい) Blue, Unripe
They say せい cram school 塾 じゅく will Ripen students.