Does Tama/Hana have materials anyway ? I don't remember that much of early Slow Start and in the latest chapter i can barely count on one those moment so i never really understand this ship, if anything i shipped Hana with the other resident ronin girl.
In fact I really do not like Eiko for clearly being Hakka-Ya's favorite character and always overshadowing Hana in the manga. In fact, it's why I stopped reading in the first place.
As i personally still read it (when we had chapters) because i'm a bit of a masochist, i tend to think a bit the same of Eiko. Whereas like i said Hana/Tama moments are very rare. Eiko/Sensei or Eiko/Kamu are far more present, asking you who he is the MC.I personally never liked the Eiko/Sensei pairing so it's a bit different for me, i can continue to read it if i avoid those moments.
PS : I don't want to talk ships prefences in Slow Start here so don't mind the mast part of my comment.