Binding Seal upgraded, new trait: Shadow Purgatory! A "threesome" with Transparent Escape Technique

The day flew by.

At the Hokage Building, talks between Sunagakure and Konoha were still ongoing.

Mikami Yu had nothing to do with any of that, so, just as he had over the past few days, he went alone to the training ground on the outskirts of the village and spent most of his time winning over and practicing Ninjutsu.

A few days ago, right after he had given away that set of Sealing Technique skins, Binding Seal's affection had shot up to 93. The ultimate goal of 100 points was already within reach.

Now, after several days of persistent [Dialogue] and [Practice], Mikami Yu had finally raised Binding Seal's affection from two digits to three, successfully unlocking its max-affection trait.

[Binding Seal affection +2, current affection: 100/100 (Heart-to-Heart)]

(Stage rewards received 4 times: physique +4, trait: Shadow Purgatory. Your Sealing Technique strength increases substantially, and binding effectiveness increases by 50% over its original level. There is also a chance to trigger the "Shadow Purgatory" effect, creating a circular domain with a radius of 50 meters. Enemies within this domain are continuously bound and suppressed, and their Chakra consumption increases by 30% over normal. However, if you use other Ninjutsu while releasing a Sealing Technique, that Sealing Technique's Chakra consumption increases by 20% over its original cost.)

[Shadow Purgatory]

This max-affection trait looked pretty good.

Actually, it was very good. A 50% increase in binding effectiveness was already a considerable boost. It meant Mikami Yu's Sealing Techniques would be more secure and reliable than most people's, and the additional wide-area control effect was icing on the cake.

Except-

"I remember that, at the start, using Binding Seal together with other Ninjutsu only added about 5% to my Chakra consumption, right?"

How had that climbed all the way to