Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken: After the Rain

Highschooler Amane Fujimiya just started living alone but already has a strange neighbor. Right next door to him lives the most beautiful girl at school, the "Angel" known as Mahiru Shiina. Their curious relationship blossomed when Amane lends Mahiru an umbrella on a fateful rainy day. Once complete strangers, now neighbors, these teens find themselves gradually drawn to each other. A collection of sweet, impatient moments of everyday life between a blunt boy and his cute neighbor. (Source: Square Enix)