If you're looking for anime similar to Maison Ikkoku: Kanketsuhen, you might like these titles.
Long ago, before Lum and Ataru met (before they were born, even), Lum’s grandfather made an agreement. After being tricked by a merchant into eating a poisoned mushroom, he traded his granddaughter-to-be’s hand in marriage for an antidote. Now, 120 years later, Lum has grown to a marriageable age, and the merchant has come to collect his due! When Lum is kidnapped, Ataru must go on a planetary chase to get her back, initiating a sequence of events that will end the adventures of the Tomobiki gang once and for all…
The final end movies to 2 highly acclaimed series(urusei Yatsura and Masion Ikkoku) made by Rumiko Takahashi. If you have watched both of the series its a must you watch these as it ties up the story. Both kinda share the same plot due to it being the main hero or heroine have a miscommunication and trying to settle it out throughout movie. However if you are a fan of 1 of these series/film try to catch up on the other series. Since it requires slight knowledge of the characters and emotional attachment to get whats going on and to feel for the film.
So the reason why I about both of those anime movies such as Maison Ikkoku: Kanketsuhen and Urusei Yatsura: The Final Chapter is that they werewboth released in 1988 if you have seen both of Urusei Yatsura and Maison Ikkoku TV series if you love Rumiko Takahashi's famous work which is part of Rumiko Takahashi world.
One day, Jun brings home a new brooch for Shinku's outfit. To his surprise,she seems upset at this and coldly refuses his gift. Thankfully, Souseiseki notices Jun’s confusion and begins to explain the events surrounding their first contact with Suigintou in the distant past. Now, Jun will finally learn the origin of Shinku and Suigintou’s hatred for each other – in addition to why Shinku refuses to wear the beautiful new brooch Jun bought for her.
There’s more to being in the light music club than rehearsals and afternoon tea, there’s also countless other distractions from discussions about what souvenirs the gang brought back from Kyoto to discussing their childhood memories. With Azusa attempting to determine everyone’s previous lives from their dreams, Mugi hosting her own three-minute meals segment, and everyone concocting imaginary siblings for Mio and Mugi, the girls always find something to do.