Hana nomi zo Shiru, Umibe no Étranger Recommendations
I can't believe this hasn't been recommended yet. Same refreshing art style and same type of nostalgic airy feeling. I prefer Umibe no Etranger slightly more though because the storyline is more cohesive and it's cuter in a way as well. That necklace and that creepy stalker guy in Hana nomi seems shoe-horned in unnaturally.