Tokimeki Memorial: Only Love
If found it checking the anime calender on anidb, the uniform looks alike and the description mentions something about 'running around', and it seems like a school/harem. Tip: dont take a screenshot from the first episode of a serie (unless there is only episode ..), infact dont post series that aired the past few months (alot of people will know them), atleast that's my reasoning.
I'm not 100% sure it's correct, but if it is here's mine:
(another tough one, kudos if you can guess the title)