Kusunokis Flunking Her High School Glow Up vol 1 back

Keisuke Shizuki might have been an outcast in middle school, but not anymore. The trauma of being rejected by his first crush left Shizuki with a phobia of pretty girls and the drive to remake himself and start high school fresh: new looks, new friends, new confidence. That is, as long as he avoids the cuties and anyone who knows anything about his past. Unfortunately for him, the prettiest girl at his new school just happens to be his former middle school classmate and another ex-outcast, Shizuka Kusunoki. Unlike Shizuki, Kusunoki still lacks the social skills to make the most of her new appearance-and she wants Shizuki's help. But helping Kusunoki will mean spending a lot of time around a beauty, and drawing some not-so-welcome attention...