light = not so much impact
heavy = much impact
really heavy = a lot of impact, may leave you sad for days
Ao Haru Ride (light, heartwarming)
Kyou, Koi wo Hajimemasu (light, heartwarming)
100 days with mr arrogant (light, heartwarming)
Hot Road (heavy, heartwarming)
Kanojo wa Uso Wo Aishisugiteru (heavy, heartwarming)
Postman to heaven (light, heartwarming)
Hanamizuki (heavy, heartwarming)
My Rainy Days (heavy, heartwarming)
Secret (taiwanese, heavy, heartwarming)
Koizora - I really prefer the drama over the movie though. (really heavy, heartwarming)
A Werewolf Boy (really heavy, heartwarming)
Bandage (heavy, not heartwarming)
Bleak Night (really heavy, not heartwarming)
Dear Friends (heavy, heartwarming)
Rinne no Ame (really heavy, not heartwarming)
Moon Child (really heavy, heartwarming)
Taiyou no Uta (heavy, heartwarming)
A millionaires first love (heavy, heartwarming)
Yuuki (really heavy, not heartwarming (actually some may say otherwise, I honestly thought his friends weren't really there enough for the guy))
out of these my favorites were Yuuki, Hot Road, Kanojo wa Uso Wo Aishisugiteru, A Werewolf Boy, Bandage, Moon Child and Taiyou no Uta