The first three issues they have no data so a series is just sort of put into the top 5 by default, and it has color pages to boost it for the first two chapter.
The fourth chapter was in issue 35, and it was ranked 9th there and 8th in 36/37. But those placements would have been in response to the super sized first chapter and the second with a color page, 38 is the first time its really getting judged.
And in issue 38 it was 12th.
I thought the first 7 placements were generally marked as "safe"? And series that have color pages, are one-shots, or are still brand new aren't usually counted in the rankings either. So that would make it #7 with all of that applied.
But looking at other new series, Samurai and Blue Box received a similar placement for their 7th chapter and they're both established successes already. Witch Watch was even further down for its 7th chapter.
I think it's too early to tell how Hood will do. Especially with the weird position Jump is in right now where the only guaranteed axe coming up is Candy Flurry. I've never seen the magazine fluctuate so much on their bottom 3 series in a while.