Thanks. Glad I wasn’t missing out on something. I bought the LN to support the author and have been stumbling through machine translations and there’s some cute developments in volume 3 (the all new stuff not in the WN at all).
It's okay for neo-Tsukasa to feel happy about this, but he should also remember that he's only meeting Sei right now because he at least partially agreed to help Yuuichi. Helping Yuuichi to deal with Tojoin practically means the same as going against a tank with only a pistol in hand.