...I may sound bad, but don't ship senku and kohaku...I can't see them as love interest at...

Its very upsetting how the author had said it multiple times IN THE MANGA that they can’t or doesn’t look/feel like a couple (said by themselves, other characters and some moment indicated that) but turns around and teasing us with seems to be hints for SenHaku, what’s the point of making Senku uninterested in love, Kohaku doesn’t show romantic feelings for Senku, SAYING they won’t work out but still teasing their “potential” ??

It’s like they’re trying to hit the last nerve

I agree, theres just something that doesnt click well when it comes to these two, weird cuz everyone potential romance works out so well, maybe its bcs of senku character or maybe the “your soulmate is born 3700 years after yours” trope sounds too way too depressing for me, especially cuz theyre both normal human.

For me, an active or talkative and likes to fight kind of man is more suitable for Kohaku. I feel like the author realize theres something off with SenHaku and decided not to push them, but at the same time they still want them to be together thats why they teasing us a lot in the manga. Or they just cant squeeze their scene in the manga, who knows. But Im praying their time to be official never happened #－.－)

I think it's literally just that, "teasing." It probably really won't happen, and the author probably really don't have plans for SenHaku, but he teased it anyway because he's a troll.

??? Definitely not teasing. The author is very clear about senku and kohaku relationship. They care for each other but not love, never have the romantic pull. The artist on the other hand, used to draw romance between male and female pair so of course it would seems like it was a "hint". Again, it's not.
You clearly never see a male and female character in a good platonic friendship family bonds and it shows

“It shows”. Dude, I can give you tons of male and female duos who are platonically love each other / platonic soulmates. What I said there and what you told me are basically 99 to 100. You just paraphrased what I goddamn said.
Konami isnt Senku’s ONLY female friend he treasures, but comparing what other female characters have with him to Kohaku’s and him together, the vibes are SO different. The hugs some other characters gave him are not as “mistaken” as when it’s from Kohaku. The looks? Do NOT tell me the way they drew her gaze towards at him are sometimes making you feel things.

What I want to say is. YES ! They are NOT in love, I know that very CLEARLY . However, the way they are drawn and their interactions (the atmosphere, the way their blushes are drawn, the expressions, the reactions of those around them, etc..) can be somewhat misleading and WOULD make them look like they’re in love if not thanks to, and I quote myself : “ author had said it multiple times IN THE MANGA that they can’t or doesn’t look/feel like a couple (said by themselves, other characters and some moment indicated that)”.
If there isn’t a TONS of times they do those things, most people would just come to a conclusion that Kohaku and Senku are in love. Which is not canon, but the artist keep making them “look like it”