If you're looking for manga similar to Ai sae Areba Toshishita nante (Light Novel), you might like these titles.
Struggling to raise his young brother on his own, Shizuku has been working as a male companion in order to make ends meet. One day, he mistakenly thinks that his little brother has been kidnapped and attacks his neighbor, Tsujido. Seeing that the brothers need help, Tsujido starts to cook warm meals and care for them. For the first time, Shizuku got a taste of what it's like to be taken care of in a family...
In the Kingdom of Niels, where dragons fly, Kyle, a "half-demon" knight of demonic descent who can speak the tongue of dragons, has a faithful reunion with his past lover, Alfred. Three years ago, for reasons he keeps to himself, Kyle bid farewell to his boyfriend, though he has never forgotten about him. But Alfred, who had once been his direct superior, is now just a count of the borders, a Markgraf, while he is but an ordinary knight. Kyle also holds a certain secret, which he can never tell Alfred...Since he has no right to by his side, Kyle tries to distance himself from Alfred, but Alfred won't allow them to part―?