Respectful term for one's own older brother or addressing an older brother figure. More formal and polite than 兄さん.
See also: 兄さん (にいさん)
Older brother, a letter has arrived for you.
My older brother is a doctor.
Standard kanji spelling with honorific 様.
Kana spelling of the honorific suffix; softer or more casual feel.
Compound of 兄 (ani, 'older brother') with the honorific suffix 様 (sama). The reading にい is a variant of あに used in compounds.