Yeah I felt the same way and this is my second time reading this... maybe if it was longer it could have given what it was missing
I'm the same too Σ( ￣□￣||)
I felt that there was this big build up during the first chapters, only to be solved with a few lines of Tomoyuki narrating the whole ordeal and we don't even get to see a proper resolution. We just get told of it. It was rushed and anticlimactic and it pulls you out of the story and whatever comes later feels shallow and empty. We missed a big part of the story (maybe even the whole purpose of reading it) and with it our connection with the characters
...for this manga. The story wasn't poorly written, the characters, themselves, weren't dull, the story premise was interesting... yet I kept finding myself uninterested in this story. The art conveyed passion between the MCs, but I never felt any with or for them. The "ending" in Ch. 4 felt rushed and left me cold. I don't like stories that involve gay men getting married (hetero) and having kids for "the sake of the family name" or "bloodlines" - too contrived and cliche. The reunion in Ch. 6 was sweet but still felt empty and passionless to me. I can't put my finger on exactly why I felt this way, but there it is. The second story had potential that seemed extinguished by a rush to the end. Both were good stories from a writing and art perspective, I just felt no connection with them. I'll likely try reading this again later to see if my feelings are the same.