Sister's All You Need., Vol. 1 (light novel)

Itsuki Hashima is a novelist who''s hopelessly enamored with the idea of little sisters and is constantly surrounded by colorful characters. A world class genius and love-guru who''s beauty almost seems a waste on her. A girl who''s constantly troubled by her friendships, love interests, and can''t even find refuge in her dreams. A ridiculously talented illustrator. Each of them have as many problems and worries as the next and they never have a dull day together as they play games, travel, and work together. From the same author of the famous I Don''t Have Many Friends, Yomi Hirasaka!