I didn’t feel right about that either TT^TT but also haruki being frivolous like that is on-brand for him. Fujie deciding on rules for them was SO the right move.
I wished the story was longer. Fujie and Haruki’s personalities are worth unpacking more — I wanted to see them influence each other in a good way, and find their own happiness with each as they learn.
Also, I’m not sold on Haruki being serious enough for them to last to be completely honest, I need to see it to believe it.
And wouldn’t it be just fun to see more of how Fujie’s cute sides pop out here and there — he definitely will always be the serious type and only those who observe him closely can see the affectionate sides. Haruki is the perfect lens for that — and yet it ended so fast!

If we just jump over the facts, that in the 2 first chapters, the top SA'ed the bottom... then yes they are SUCH a cute couple that make sure to communicate their wants and needs ( ̄∇ ̄")