For 10 points, name this language, which was also used in the medieval novel The Tale of Genji.
The iroha (ear-oh-ha) poem uses every character in this language exactly once. A thirty-six-line poetic form that developed in this language requires two verses about blossoms and three verses about the moon. That form, (*) kasen (kah-sen), is one type of this language's "linked poems," which evolved from this language's aristocratic renga (renn-guh) poetry. Another of this language's literary forms, the zuihitsu, (zwee-heet-sue) was used to write The Pillow Book by Sei Shonagon (sai show-nuh-gawn). For 10 points, name this language, which was also used in the medieval novel The Tale of Genji.
The iroha (ear-oh-ha) poem uses every character in this language exactly once.
{Japanese} [or {Nihongo}]