He never looses his cool, She is famous for her temper tantrums
He does not know to do nautanki, She is a drama queen
He has never lost a single eraser in 10 years, She looses an eraser in every 10 days
He has changed just 2 jobs in 10 years, She has changed 10 jobs in 2 years
He is maha practical, She is extra senti and emotional
He loves heavy metal songs, she completely detests them

Gayu and Siddhu with Dadaji and Doggie
And despite all these differences they both get along very well.
I don't think you need any intro.
He is my sweet and world's best elder brother- Siddharth Vishwanathan
And She is me - Gayathri :)
You should read this to know more about our bond.
I am maha excited about Raksha Bandhan...have some plans for the occasion.
I cant give anything to my brother other than my love and affection (good excuse for not spending money). But then I have decided to make his favorite Cauliflower kii Sabji, which we famously call 'Siddhu Bhaji' at home :)
Please pray that it turns out well.
Meanwhile, I will pray for the well-being of my brother and the entire world :)
Happy Raksha Bandhan to all of you. Brothers, please apni behno kii raksha karna and give her good gifts and sisters please apne bhaiyya ko acche tareeke se lootna :)