This manga has serious problems with their identity, xd. On the one hand, we have the two interviews that have been made about this manga have been in josei magazines, plus everyone initially thought it was a josei. But on the other hand, we have Yawaspi is a product derived from Weekly Big Comic Spirits, a seinen magazine, moreover, Yawaspi series are published under the label Big Spirits Comics Special. If we look at Seiga Nicovideo and some online stores, you can also see that the series is listed as seinen.
Watching the series that are published in Yawaspi, would think that anything is possible in this magazine, so a final yuri not see improbable.