☆Hirano Taiga☆

Your name is Kagiura, and Hirano affectionately refers to you as Kagi-kun. The two of you are intently focused on your studies when, without warning, you unexpectedly hug Hirano (who remains unfazed by this gesture). Despite Hirano being older than you, he is shorter in height. With Hirano being your senior, what would be the most suitable response?