Enoshima Prism (2013)

Both are about time travelling to help friends. Both are based on famous manga. Both star Nomura Shuhei.

Shuta, Saku and Michiru have been best friends since they were kids. Tragedy strikes the friends when during the winter of 2010, Saku dies from a heart attack. After Saku's death, Shuta and Michiru become more distant. On the second year anniversary of Saku's death, Shuta boards a train in the Enoshima subway. Somehow, Shuta travels back in time to 2010, before Saku died from a heart attack. Although Shuta is confused by the time change, he attempts to save Saku by changing the past.

In the town of Sakurada, where about half of the residents have special abilities, Asai Kei is a high school student and is able to remember everything. Haruki Misora is also a high school student and she has the power to reset the world by 3 days. If they use both of their powers together, they can go back in time by 3 days and retain their memory. They are watched by the administrative bureau.

Both "Love relationship" (drama) and "Enoshima Prism" (Movie) feature Honda Tsubasa, Fukushi Sota and Nomura Shuhei as the main characters. Even though time traveling is not a thing in the drama, the characters have the same relationship and personalities. Enoshima Prism could pretty much be a special to Love relationship.

The year is 2019. The 27 year-old Huang Yu Xuan terribly misses her boyfriend Wang Quan Sheng, who has been missing for two years and is presumed dead. Her birthday wish for this year is to "see him." The year is 1998. The 17 year-old Chen Yun Ru is in love with a boy who doesn't feel the same way for her. Her birthday wish for this year is to "become the girl Li Zi Wei likes." One day, Huang Yu Xuan receives a walkman and a music cassette from an unknown person. She falls asleep listening to its songs and wakes up to see Wang Quan Sheng sitting by her side. She believes she has finally been reunited with her boyfriend, but there's a very big twist. She learns that she is no longer a 27-year-old woman but a high schooler named Chen Yun Ru, who is in the hospital recuperating from a head injury. And the man by her bedside is not her boyfriend after all, but a schoolmate named Li Zi Wei. Trapped in what appears to be the past, living another person's life, Chen Yun Ru's death in 1999 will be Huang Yu Xuan’s death if she doesn't figure out how the girl landed in the hospital. All the while, Li Zi Wei finds himself strangely drawn to the girl who used to be Chen Yun Ru, despite the fact that he knows his closest friend Mo Jun Jie has had a crush on her... Can true love find a way to bridge a seemingly insurmountable time gap?

The year is 2019. The 27 year-old Huang Yu Xuan terribly misses her boyfriend Wang Quan Sheng, who has been missing for two years and is presumed dead. Her birthday wish for this year is to "see him." The year is 1998. The 17 year-old Chen Yun Ru is in love with a boy who doesn't feel the same way for her. Her birthday wish for this year is to "become the girl Li Zi Wei likes." One day, Huang Yu Xuan receives a walkman and a music cassette from an unknown person. She falls asleep listening to its songs and wakes up to see Wang Quan Sheng sitting by her side. She believes she has finally been reunited with her boyfriend, but there's a very big twist. She learns that she is no longer a 27-year-old woman but a high schooler named Chen Yun Ru, who is in the hospital recuperating from a head injury. And the man by her bedside is not her boyfriend after all, but a schoolmate named Li Zi Wei. Trapped in what appears to be the past, living another person's life, Chen Yun Ru's death in 1999 will be Huang Yu Xuan’s death if she doesn't figure out how the girl landed in the hospital. All the while, Li Zi Wei finds himself strangely drawn to the girl who used to be Chen Yun Ru, despite the fact that he knows his closest friend Mo Jun Jie has had a crush on her... Can true love find a way to bridge a seemingly insurmountable time gap?

Aoi studies photography at a school in Tokyo. She undergoes a heart transplant operation and goes to the island of Okinawa to recover. Her uncle lives on the island. There, she holds a camera and walks along the island. Aoi hears the sound of a trumpet. She looks up and sees a young man playing the trumpet. His name is Ji Oh.

It remind me of this drama with similar story line of group of adults who got friends opposite sex & they all try overcome obstacles & hardship in their friendship. Starring famous Japanese actor & actresses.

South Korean student Dong Ha met a Chinese student named May while studying in America several years back. The two students became friends but didn't realize the bond they had until they went their separate ways. Now, as an architect, Dong Ha travels to China in lieu of a business partner to work on a construction project. By coincidence, Dong Ha runs into May again, and they share their memories spent together as students in America. Dong Ha and May fall in love once again...

On her 17th birthday, Ozaki Karin suddenly lost her childhood friend and first love, Soma Jun. Ten years later, on her 27th birthday, Karin happens to find a film camera left behind by Jun and the photos he took of her. This causes her to remember all the feelings she had for Jun. Unable to control her emotions, Karin burns all the photos and is transported back in time to the day the photo was taken 10 years ago. As Karin travels back and forth between the past and present to stop Jun's suicide, she slowly discovers the shocking truth behind her childhood friend's death.

Both involve the main character time traveling back into the past to save a friend and almost the same ending too.

The third collaboration between Kelly Chan and Aaron Kwok yields probably their best pairing, though not their best film by far. Luna Ng is a popular newspaper columnist who makes an enemy of DJ Cheung Yung when she attempts to block his purchase of a used vinyl record. Cheung Yung is a lover of old vinyl and uses them on his popular radio show, where he plays old tunes and sometimes gives ill-advised romantic advice. Luna wanted that record because it was a gift to her first love and the shock and dismay over seeing it in a used bin cause her to wish to possess it again. The two begin to spar, she in her column and he on his radio show.

- Time Leap - Friendship - Triangle love - School life and youth + Ikemens :D

While going back to Kinmen island during summer, Ah Kwan learns from the internet about a pretty girl called Chen Wen Qing, who emerged champion in the National Piano Competition. One day he coincidentally meets up with her. For both, this is the best summer holiday they ever had in their lives. Before going back, Wen Qing promises to Ah Kwan she would email him every day and coming next summer, she would find him in Kinmen again.

Shogo is left blind and mute from an accident but he is able to live a fruitful life as a composer. He receives ongoing therapy from the hospital where nurse Kana works. Just when their relationship is about to blossom into romance, tragedy strikes when Shogo is killed in a car accident. At the moment of Shogo's death, a shooting star falls and gives him the chance to live again for four more days. But he is unrecognizable to his friend and forbidden to reveal his true identity. Shogo decides to express his feelings of affection to Kana.