Saki's Love Love Honeymoon. Sequel to Snow Sakura / Yukizakura at Saki route and share characters with Umi no Michi.
6 months after their sudden engagement on summer vacation, Yuuji start working part time to present surprise pre-wedding honeymoon (also called "funnymoon") trip to Oshikawa Oshima island at Southern Japan. They stay at Yoshioka inn which hostess is also an acquaintance of Yuji's & Saki's fathers.
The event is set before the epilogue of Saki route when they are already married.