My first turn usually goes like this:
1. Lost Love: Defensive Stance, Pass
2. Seishin: Defensive Stance, Pass
3. Seishin: Defensive Stance, Pass
4. Gaki: Attack Desperate Merc, deal weak/moderate(3) damage, Walk
5. Insidious Madness: Defensive Stance, Walk
6. Insidious Madness: Defensive Stance, Walk
7. Desperate Merc: Walk, Walk
8. Seishin (In base with Kirai): Walk, Walk
9. Seishin (In base with Kirai): Walk, Walk
10: Kirai: In the Spirit World, Evolve Spirit (Summon Shikome completely within 5", towards her target opponent), Heal Self, Summon Ikiryo (within 12", so she can pull Shikome towards her prey). Bounce 1 Seishin into base.
11: Datsuie-Ba: Guide Spirits on self, Weigh Sins on Desperate Merc (Summon Gaki, place Seishin as close to Shikome as possible, Gaki picks up corpse counter, Kirai makes a healing flip). Heal Kirai (Note, if Guide Spirits fails, Walk instead and do Weigh Sins)
12: New Seishin: Spiritually Empower on Shikome
13: New Gaki: Walk, or something...
14: Ikiryo: Call Spirits (pulling Shikome and anyone else you want to), Move and attack etc.
15: Shikome: Nimble into prey and rip them apart.
Then turn 2...
Sac Madness for Initiative. Smash stuff with Shikome some more.
Note that this tactic of diving in can be risky, but it can end games quickly if you can pull it off. However, it is highly dependant on what you have in your hand.