Written in 2019
There are many games, especially from japanese developers, that indicate there might be feelings between the characters that just never really turn out to be said, often enough with the ending that one character even leaves or goes on a journey.
A friend told me that it is absolutely uncommon to show feelings in public. This also does not help in getting to know each other and establish a romantic relationship. Since it is so uncommon and also not really acceptable to express feelings in public, so called love hotels are still very successful in that country. It is not only about sexual contacts, but also rather the only option to spend time alone as a couple together with the possibility to show their significant others what they feel.
Here's an example from real life: There was a couple within a certain company in Japan. For years, no one did know that they were a couple, they continued calling each other "mister X" or "miss Y". No display of any romantic feelings - they looked at each other as if they were just co-workers, they didn't hold hands - totally different to what is going on with couples at work in Germany. At some point, that couple married, but didn't change their behaviour towards each other.
Another aspect that needs to be taken into account is that feelings in japanese manga (and youth) culture are often limited to Shojo mangas, which are aimed at young girls. In Shonen mangas, the protagonist often enough is cool and untouchable.
The following examples are just a few out of many, with more coming soon.
Octopath Traveler is a game where players follow the story of eight characters through their personal quest. One of these quests follows a character named Cyrus, a scholar who teaches the princess and her entourage on the court school of Atlasdam.
Right at the beginning, the twisted nature of this story begins. Cyrus is told to be "very special" with ladies, and it seems that both the princess as well as her friend / maiden, Therese, find him especially appealing. However, after she overheard him talking to the princess in a rather flirty way (of which he had no clue about, of course), she was heartbroken and accused him of being in a relationship with the princess.
This got Cyrus expelled, and since he had to find some forbidden book, he embarked on a journey. And as his journey continued, he met some other ladies, one being a long time "friend" called Odette who also told him that he was always in "trouble with the ladies". Of course, Cyrus remained focused on his mission and ignored the remarks, although it seems he understood them pretty well as he stated that he "did expect such reactions" from Odette.
Through all of his story, Cyrus always changes the topic to his dutys as a scholar or the mission to find the dangerous book whenever the story twists toward interactions with women. Of course it could be the case that Cyrus is not interested in women at all, but there is not a single hint of him finding men attractive. It's just his, his good looks, his scholarship and his mission.