In So Deep, It's Love Already, Volume 1

This unconventional teen romantic comedy manga features a heartbroken fangirl main lead and a shy easily embarrassed love interest.
Otaku Momoka Kirino has devoted her life to her favorite characters ― and Shuuto Kametani, the scary, snappish new boy in class, is just her type! When she catches a glimpse of his blushing face and learns his secret fear of embarrassment around girls, she falls head over heels into... stanning him with all her heart?
But a proper fan is dedicated to spreading their love for their favorites far and wide. As Momoka learns of the protective and gentle nature behind Shuuto's intimidating front, she finds herself worrying that she might want to keep him all to herself...