An explanation might put why it's tagged Lotus Eaters into context:
Early on, Marisa gets extremely drunk at Geidontei while investigating it, and Reimu finds her barely conscious. She carries her home (Marisa sleepwalked by herself half the distance though) and then changes her into these nightclothes before setting her to sleep beside her. Since Marisa was flailing about in her sleep and never woke up, there is no way Marisa could have gotten dressed into that unless Reimu changed her.
ReiMari fans noticed that and went "wow that's gay"
An explanation might put why it's tagged Lotus Eaters into context:
Early on, Marisa gets extremely drunk at Geidontei while investigating it, and Reimu finds her barely conscious. She carries her home (Marisa sleepwalked by herself half the distance though) and then changes her into these nightclothes before setting her to sleep beside her. Since Marisa was flailing about in her sleep and never woke up, there is no way Marisa could have gotten dressed into that unless Reimu changed her.
ReiMari fans noticed that and went "wow that's gay"