Tensô Kidô Alvadring chapter 18 is out: part 1, part 2 (available until 2017-12-18)
Yawaspi even included that promo illustration with Miu in this chapter.
Volume 3 has been anounced for January 12, 2018, and Mr. Matsuena is actually listed as co-author this time. The description's first sentence actually reads "Shun Matsuena suddenly jumps into the battle!".
And and the end they say "Starting for this volume the author of History's Strongest Disciple Kenichi, Shun Matsuena, genuinely joins the fight. The master disciple tag team delivers a soulful mecha action story."
This volume is about 20 pages longer than the previous ones. I assume they are going to include all that bonus art Mr. Matsuena drew.
Now I've got a few questions about the new serialization announced in Shônen Sunday.
Is he going to draw for two series at once? It would not be the first time he does something like that, but still.
Is Tensô Kidô going to end soon so he has time to focus on this new manga? They could theoretically end it after the current battle.
Or is that new manga actually TKA and they are moving it from Yawaspi to Weekly Shônen Sunday?