Both follow the story of Nonhuman MLs, that have been alive for centuries and have powers. They both want to keep to themself for the most part and not change the outcome of the lives of others. However, the rule is broken for the lives of the FLs early on in their lives. Once they meet again, they don't want to fall in love as they have a short time left on Earth with the FLs, but it is bound to happen.

They also feature the same actress (Yoo In Na).

this is a special with the characters of the previous rider show coming back with the current team. has the teams join forces. Both shows have the same main writer

this is a special with the characters of the previous shows coming back with the current heroes. has the teams join forces

this is a special with the characters of the previous shows coming back with a recent hero. has the teams join forces

this is a special with the characters of the previous sentai coming back with the current team. has the teams join forces

this is a special with the characters of the previous sentai coming back with the current team. has the teams join forces

Both are films that continue the story years after the super sentai series ended to celebrate an anniversary. It catches up with the character and what they have been doing for the past decade/s.

Both are films that continue the story years after the super sentai series ended to celebrate an anniversary. It catches up with the character and what they have been doing for the past decade/s.

Both are films that continue the story twenty years after the super sentai series ended. It catches up with the character and what they have been doing for the past decade.

Both comedies revolve around a couple who end in a Marriage Of Convenience. The male leads end up falling for the cute female lead by the end from their interactions with her. The ending is different enough, however, so be ready.

Both comedies revolve around a couple who end in a Marriage Of Convenience. The male leads end up falling for the cute female lead by the end from their interactions with her as they live together.

In one of the rarest of cases, the sentai that will replace Zenkaiger, Donebrothers, will be a sequel to it, having actors/characters and world elements care over.

DonMomotaro already appeared in an episode of Zenkaiger and Zenkaiser will be a supporting character in Donbrothers with a new form to fight in. Also, the combined mecha that DonMomotaro and the Zenkaigers had will reappear in Donbrothers.

So, while it might not be absolutely necessary, it might be a good idea to watch Zenkaiger before starting Donbrothers.