Futarijime Romantic

Kumamori has always been in pursuit of an ideal romance. When she changes classes for her second year of high school, she is unexpectedly reunited with "Tajima," the partner of her first kiss. Unfortunately, he is dry and stoic when it comes to romantic gestures.... 200% heartwarming! A realistic but cute and romantic opposites-attract love story!
(Source: Comic Days, translated)
Note: Chapter count includes a bonus chapter.