History Manga / ASignOfAffection

* AlcoholInducedIdiocy: How Shin and Emma are introduced; they stumble into Kyouya's bar drunk from bar-hopping, and instantly act like fools. Neither of them remember much the next time they meet Yuki.
* ArentYouGoingToRavishMe: Emma shows up at Itsuomi's apartment, unannounced, expecting to get attention from Itsuomi. Not only was Itsuomi not in the mood, he just leaves her alone in the apartment.

** Emma has known and crushed on Itsuomi since at least high school, but he only sees her as a friend. Shin has know both of them since high school as well, and has crushed on Emma for just as long as she has with Itsuomi.

* ImpededCommunication: Yuki gets by often with reading lips (given that most of the people she interacts with don't sign), but she notes at several points that it falls short when people talk too fast, or if there are multiple possibilities for the lip reading. PlayedForLaughs when she once meets up with Itsuomi after they get together at a train crossing, but a train comes before they reach each other. She thinks he mouths "Can I hug you?" to her, to which she agrees, only to discover minutes later that he tried to say "Can I ''kiss'' you?" instead.
* LovingBully: Oushi's semi-stalker behavior and regular insulting behavior towards Yuki come off this way. Itsuomi in particular seems motivated to keep Yuki away from such an unhealthy attitude, and Oushi's own sister notes [[SurprisinglyRealisticOutcome that this behavior is what drove Yuki away from him]].

* SingleTargetSexuality: Emma is fixated on Itsuomi and him alone, and has been since at least high school (given that the series begins with Itsuomi in at least his second year in college, that's at least 3 years). The problem she has is that he has no romantic interest in her whatsoever.

* UngratefulBastard: Itsuomi lets Emma stay over night, despite showing up unannounced. She tries to get his attention, despite being busy with other things. And when he turns down her advances, she thinks that if he doesn't want her there, she will just leave.

------

* ChildhoodFriends: Oushi and Yuki had known each other since childhood. However, Yuki views Oushi as an annoying but dependable friend due to CondescendingCompassion from him while Oushi crushed on her for years. In addition, Emma has known and crushed on Itsuomi since at least high school, but he's always only seen her as a friend.

** Oushi is envious of Itsuomi for Yuki's crush on him.

''A Sign of Affection'' (ゆびさきと恋々, ''Yubisaki to Renren'') is a {{shoujo|demographic}} manga written by suu Morishita and serializing in the magazine Desert starting July 24, 2019. It was later published into English by Kodansha USA, and can be found [[https://kodansha.us/series/a-sign-of-affection/ here]]. An anime adaptation by Ajia-do Animation Works premiered on January 6, 2024. The series is licensed by Website/Crunchyroll and can be found [[https://www.crunchyroll.com/series/GEXH3W2V7/a-sign-of-affection here]]. It also got a musical adaptation, which premiered on June 4th, 2021 and ran until June 13th, 2021, at the Honda Theater in Tokyo.