The eternal happiness of being together forever─────

Sara is timid, but calm and kind, while Yura is proactive and loves Sara.
Sara is a medical student who lives with the support of Yura every day.
After a busy period, he finally has a day off to relax and spend time with Yura, but...

Both of them have dark feelings for each other, and they hope to be together forever.

[From official website]