is a character in Witch Week
Nirupam is originally from India, where his brother was burned for being a witch. He is unusually tall for his age, but not at all athletic.
He is a student at Larwood House and in the same class as Charles Morgan, Nan Pilgrim, and Brian Wentworth.
He knows Miss Cadwallader reads the students' journals, so rather than writing down his actual thoughts and feelings, he describes things he saw in India, such as a rope trick.
See also: Witch Week (spoilers).