Hachimitsu to Clover, Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai. Recommendations
Both series have the same atmosphere to them, and both of them deal with groups of friends and life changes. Both are quite serious or have serious undertones.
Both are good dramas, both are about growing up and understandig things as time passes. Both stories are centered on a single cute girl:)
Both involve a group of friends learning to grow up from adolescence. Characters experience lost opportunities and learn from new ones.