10 Years Ticket (2022)

In both dramas male lead accuses female lead for the death of his loved one.
Male leads are hellbent in taking revenge from female lead. After a while they realize the truth and starts falling in love with the female lead.

Male lead wants to get revenge on the female lead because the latter is responsible for the death of their loved ones. ML hates FL to the core but when ML realises the truth he can't stop himself from loving FL...and the story continued unwrapping the truth...

-Mysterious past events
-Father who still mourns the death of his eldest child
-Shows the effect of someone's death to bereaved loved ones
-Pluem Purim, of course
-Fon Kanittha (director & screenwriter)
-Healing
-Family drama

In both dramas a sibling of one lead killed a sibling of the other lead.
Seredemo, Ikite Yuku plot:
Fukami Hiroki's younger sister was killed by a friend. Hiroki then meets the killer's sister, Toyama Futaba, 15 years after the incident. Both of their families have been burdened with grief, but through their meeting they struggle to find a brighter tomorrow.

They both have a character being killed and the sad consequences of it on the family (who is innocent) of the killer and the sorrow of the victim's one.

In both dramas male lead accuses female lead for the death of his loved one.
Male leads are hellbent in taking revenge from female lead. After a while they realize the truth snd starts falling in love with the female lead.