These two J2 matches turn on the same question: which side has to do the thing it does worst. Yokohama FC make chances against everyone, and Blaublitz Akita have very little to answer with away from home. In the other match, Albirex Niigata's high league position was built almost entirely at home, and Kofu's home block takes away the counter space Niigata live on.
Yokohama FC vs Blaublitz Akita. Under Daisuke Sudo, Yokohama keep the ball from a back three and score from many places: Shimamura as creator and scorer, wing-backs Takae and Murata, Lukian up front. They have scored in each of their last ten league games, 13 of those goals in five home matches. Akita under Ken Yoshida are a running, duel-heavy side with around 40% of the ball. Away from home they have not won in six, scoring three. Their recent away defeats were all by one goal, so the block is disciplined, but the attack barely registers: no shots on target at Iwaki.
The key matchup is Yokohama's wing-backs and two No.10s against that compact Akita block, and Akita's direct balls against a Yokohama back three that does give up shots. Akita's forwards turn very little of that into anything on target away, though. The late phases matter too. Akita were pinned back after the break against Fujieda three days earlier and now travel the length of Honshu. Yokohama have Komazawa back on the bench alongside Kubota and Adailton to throw on against tiring legs.
I expect a tight first half, with Yokohama's goal most likely coming in the second half when the substitutes arrive. Akita rarely build the early lead their blocking plan needs. They have scored first in a first half only once in their last seven. That's why I'm siding with Yokohama FC at home.
Kofu vs Albirex Niigata. Niigata win by giving up the ball and countering: midfield regains, fast play through Moraes and Shimabuku, and one-goal wins at home with well under half the possession. They have won seven of eight at home but only one of six on the road, conceding 16 away. Kofu are bottom, but most of their poor goal difference came away. At home they sit in a back five, mostly lose narrowly and concede little more than a goal a game.
The structural problem for Niigata is that neither side wants the ball. Their own coach says Kofu are solid by nature and that Niigata may have to hold the ball and work out how to score from it, which is the mode they have struggled in away. Moraes, who turns their regains into shots, went off injured early in the last match. The likely replacement, Iuri Castilho, is more a finisher than a carrier. Kofu's threats are low-volume: set pieces, wing-back crosses and Naito's runs in behind.
I expect a slow, low-event game with Niigata having more of the ball against a set Kofu block, where a single moment or a draw is the natural outcome. That's why I'm siding with Kofu not to lose at home.