The romantic storylines elevate the narrative from a standard interactive fiction piece to a profound exploration of human connection. By rejecting easy answers and fairy-tale endings, the game honors the reality of romance: that it is difficult, terrifying, and requires constant effort. The relationships are deeply watermarked by grief, time, and circumstance, making the moments of genuine, hard-won intimacy feel entirely earned.
On the other hand, I couldn't find any information on "Watermark" being directly related to a character or storyline in a manga, anime, or romantic context. It's possible that you may be thinking of a different term or title. Wakana chan-s first sex -190201--No Watermark-